Search: id:A023019
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%I A023019
%S A023019 1,21,252,2233,16170,100926,560945,2837418,13266099,57994475,239170239,
%T A023019 937026279,3507380170,12601619226,43628951025,146036139347,473924014599,
%U A023019 1494785958435,4591920193357,13764656869425,40328218603134
%N A023019 Number of partitions of n into parts of 21 kinds.
%C A023019 a(n) is Euler transform of A010860. [From Alois P. Heinz (heinz(AT)hs-heilbronn.de), 
               Oct 17 2008]
%H A023019 <a href="Sindx_Pro.html#1mxtok">Index entries for expansions of Product_{k 
               >= 1} (1-x^k)^m</a>
%H A023019 N. J. A. Sloane, <a href="transforms.txt">Transforms</a> [From Alois 
               P. Heinz (heinz(AT)hs-heilbronn.de), Oct 17 2008]
%p A023019 with (numtheory): a:= proc(n) option remember; `if`(n=0, 1, add (add 
               (d*21, d=divisors(j)) *a(n-j), j=1..n)/n) end: seq (a(n), n=0..40); 
               [From Alois P. Heinz (heinz(AT)hs-heilbronn.de), Oct 17 2008]
%Y A023019 Cf. 21th column of A144064. [From Alois P. Heinz (heinz(AT)hs-heilbronn.de), 
               Oct 17 2008]
%Y A023019 Sequence in context: A165095 A165099 A165108 this_sequence A036220 A022649 
               A165094
%Y A023019 Adjacent sequences: A023016 A023017 A023018 this_sequence A023020 A023021 
               A023022
%K A023019 nonn
%O A023019 0,2
%A A023019 David W. Wilson (davidwwilson(AT)comcast.net)

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