Search: id:A023020
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%I A023020
%S A023020 1,22,275,2530,18975,122430,702328,3661900,17627775,79264900,335937954,
%T A023020 1351507830,5191041625,19125838600,67862904725,232671319474,773027485065,
%U A023020 2494957906100,7839428942950,24025993453000,71941861591215
%N A023020 Number of partitions of n into parts of 22 kinds.
%C A023020 a(n) is Euler transform of A010861. [From Alois P. Heinz (heinz(AT)hs-heilbronn.de), 
               Oct 17 2008]
%H A023020 <a href="Sindx_Pro.html#1mxtok">Index entries for expansions of Product_{k 
               >= 1} (1-x^k)^m</a>
%H A023020 N. J. A. Sloane, <a href="transforms.txt">Transforms</a> [From Alois 
               P. Heinz (heinz(AT)hs-heilbronn.de), Oct 17 2008]
%F A023020 G.f.: Product_{m>=1} 1/(1-x^m)^22.
%p A023020 with (numtheory): a:= proc(n) option remember; `if`(n=0, 1, add (add 
               (d*22, 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 A023020 Cf. 22th column of A144064. [From Alois P. Heinz (heinz(AT)hs-heilbronn.de), 
               Oct 17 2008]
%Y A023020 Sequence in context: A055756 A128766 A125434 this_sequence A022650 A004316 
               A121792
%Y A023020 Adjacent sequences: A023017 A023018 A023019 this_sequence A023021 A023022 
               A023023
%K A023020 nonn
%O A023020 0,2
%A A023020 David W. Wilson (davidwwilson(AT)comcast.net)

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