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!)
A300584 Number of partitions of n into distinct prime power parts (not including 1) that do not divide n. 3

%I #4 Mar 09 2018 21:15:46

%S 1,0,0,0,0,1,0,2,1,2,1,4,1,5,2,4,3,8,2,11,4,6,6,18,3,13,10,10,8,35,7,

%T 42,9,20,24,22,10,72,33,35,11,102,21,120,29,26,65,161,16,117,56,93,52,

%U 246,43,113,36,139,160,370,39,422,208,102,62,216,110,613,145,305,130,780,57,878

%N Number of partitions of n into distinct prime power parts (not including 1) that do not divide n.

%H <a href="/index/Par#part">Index entries for sequences related to partitions</a>

%e a(9) = 2 because we have [7, 2] and [5, 4].

%t Table[SeriesCoefficient[Product[(1 + Boole[Mod[n, k] != 0 && PrimePowerQ[k]] x^k), {k, 1, n}], {x, 0, n}], {n, 0, 73}]

%Y Cf. A054685, A200745, A209402, A246655, A300580.

%K nonn

%O 0,8

%A _Ilya Gutkovskiy_, Mar 09 2018

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 4 22:04 EDT 2024. Contains 373102 sequences. (Running on oeis4.)