The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A279154 Number of nX4 0..1 arrays with no element equal to a strict majority of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. 1

%I #4 Dec 06 2016 22:54:22

%S 2,12,72,428,2294,11932,60304,297092,1443498,6930508,32917852,

%T 155025096,724982468,3370079700,15584464186,71742003424,328950577598,

%U 1503015006696,6845967619642,31094637435220,140875688981220,636779907204164

%N Number of nX4 0..1 arrays with no element equal to a strict majority of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

%C Column 4 of A279158.

%H R. H. Hardin, <a href="/A279154/b279154.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 14*a(n-1) -79*a(n-2) +296*a(n-3) -1137*a(n-4) +3786*a(n-5) -9491*a(n-6) +25574*a(n-7) -66007*a(n-8) +125068*a(n-9) -286655*a(n-10) +644352*a(n-11) -935651*a(n-12) +2106274*a(n-13) -4254326*a(n-14) +4407958*a(n-15) -11660139*a(n-16) +20200812*a(n-17) -12942101*a(n-18) +52398124*a(n-19) -69889240*a(n-20) +21188756*a(n-21) -190043003*a(n-22) +177570770*a(n-23) -9931732*a(n-24) +525736690*a(n-25) -354049840*a(n-26) -26853854*a(n-27) -1062956470*a(n-28) +606320574*a(n-29) +18947687*a(n-30) +1546195654*a(n-31) -882316499*a(n-32) +192000088*a(n-33) -1655999570*a(n-34) +946806094*a(n-35) -559625950*a(n-36) +1454800834*a(n-37) -725310313*a(n-38) +650909536*a(n-39) -1073036990*a(n-40) +514311888*a(n-41) -448474953*a(n-42) +540383844*a(n-43) -298642984*a(n-44) +247525328*a(n-45) -191218312*a(n-46) +91813964*a(n-47) -69588676*a(n-48) +52628912*a(n-49) -21603676*a(n-50) +3806952*a(n-51) -2143540*a(n-52) +961488*a(n-53) -183280*a(n-54) -15808*a(n-55) -23104*a(n-56) for n>57

%e Some solutions for n=4

%e ..0..1..1..0. .0..1..0..1. .0..1..0..1. .0..0..1..0. .0..0..1..0

%e ..1..0..0..1. .0..1..0..0. .0..1..1..0. .1..1..1..0. .1..1..0..0

%e ..1..1..1..0. .0..1..1..1. .1..0..0..0. .1..0..0..1. .0..0..1..1

%e ..0..0..1..0. .1..0..0..1. .0..1..1..1. .1..0..1..0. .1..0..1..0

%Y Cf. A279158.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 06 2016

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 28 21:13 EDT 2024. Contains 372920 sequences. (Running on oeis4.)