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A023010 Number of partitions of n into parts of 11 kinds. 3

%I #26 Feb 06 2018 09:19:17

%S 1,11,77,418,1925,7854,29183,100529,325193,997150,2919411,8207563,

%T 22259237,58454165,149104450,370410700,898202998,2130141651,

%U 4949034937,11281187225,25262712629,55641782779,120661583781,257862888360,543532730675,1130864017283

%N Number of partitions of n into parts of 11 kinds.

%C a(n) is Euler transform of A010850. - _Alois P. Heinz_, Oct 17 2008

%H Alois P. Heinz, <a href="/A023010/b023010.txt">Table of n, a(n) for n = 0..1000</a>

%H <a href="/index/Pro#1mxtok">Index entries for expansions of Product_{k >= 1} (1-x^k)^m</a>

%H N. J. A. Sloane, <a href="/transforms.txt">Transforms</a>

%F G.f.: Product_{m>=1} 1/(1-x^m)^11.

%F a(n) ~ 1331 * exp(Pi * sqrt(22*n/3)) / (2^(19/2) * 27 * n^(7/2)). - _Vaclav Kotesovec_, Feb 28 2015

%F a(0) = 1, a(n) = (11/n)*Sum_{k=1..n} A000203(k)*a(n-k) for n > 0. - _Seiichi Manyama_, Mar 27 2017

%F G.f.: exp(11*Sum_{k>=1} x^k/(k*(1 - x^k))). - _Ilya Gutkovskiy_, Feb 06 2018

%p with(numtheory): a:= proc(n) option remember; `if`(n=0, 1, add(add(d*11, d=divisors(j)) *a(n-j), j=1..n)/n) end: seq(a(n), n=0..40); # _Alois P. Heinz_, Oct 17 2008

%t nmax=50; CoefficientList[Series[Product[1/(1-x^k)^11,{k,1,nmax}],{x,0,nmax}],x] (* _Vaclav Kotesovec_, Feb 28 2015 *)

%t CoefficientList[Series[1/QPochhammer[x]^11, {x, 0, 30}], x] (* _Indranil Ghosh_, Mar 27 2017 *)

%o (PARI) Vec(1/eta(x)^11 + O(x^30)) \\ _Indranil Ghosh_, Mar 27 2017

%Y Cf. 11th column of A144064. - _Alois P. Heinz_, Oct 17 2008

%K nonn

%O 0,2

%A _David W. Wilson_

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)