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!)
A004098 Bell numbers written backwards. 4

%I #24 Sep 08 2022 08:44:32

%S 1,1,2,5,51,25,302,778,414,74112,579511,75876,7953124,73444672,

%T 223998091,5458592831,74124108401,40896846828,951608670286,

%U 7505022472385,27353285142715,157651618968474,3237448375176054,64348055850025144,982508492968859544

%N Bell numbers written backwards.

%H Alois P. Heinz, <a href="/A004098/b004098.txt">Table of n, a(n) for n = 0..576</a>

%F a(n) = A004086(A000110(n)). - _Michel Marcus_, Apr 05 2014

%p b:= proc(n) option remember; `if`(n=0, 1,

%p add(b(n-j)*binomial(n-1, j-1), j=1..n))

%p end:

%p a:= n-> (s-> parse(cat(seq(s[-i], i=1..length(s)))))(""||(b(n))):

%p seq(a(n), n=0..30); # _Alois P. Heinz_, Apr 01 2018

%t FromDigits[Reverse[IntegerDigits[#]]]&/@BellB[Range[0,30]] (* _Harvey P. Dale_, Feb 01 2012 *)

%o (Magma) [Seqint(Reverse(Intseq(Bell(n)))): n in [0..30]]; // _Vincenzo Librandi_, Jan 30 2015

%Y Cf. A000110, A004086.

%K nonn,base

%O 0,3

%A _N. J. A. Sloane_

%E More terms from _Eric M. Schmidt_, Apr 04 2014

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 June 3 08:54 EDT 2024. Contains 373057 sequences. (Running on oeis4.)