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 A246232 Number of compositions of n into exactly five different parts with distinct multiplicities. 2
 37837800, 290089800, 913512600, 2870988120, 8647198560, 20798177400, 52611741000, 134182896120, 299814913440, 688027838400, 1598171790600, 3415039782840, 7488313184520, 16753428299160, 34973088459120, 74787505653264, 162128661286152, 333915200009352 (list; graph; refs; listen; history; text; internal format)
 OFFSET 35,1 LINKS Alois P. Heinz, Table of n, a(n) for n = 35..120 MATHEMATICA b[n_, i_, s_List] := b[n, i, s] = If[n == 0, Total[s]!, If[i<1, 0, Expand[ Sum[ If[j>0 && MemberQ[s, j], 0, If[j == 0, 1, x]*b[n-i*j, i-1, If[j == 0, s, s ~Union~ {j}]]/j!], {j, 0, n/i}]]]]; a[n_] := Coefficient[b[n, n, {}], x, 5]; Table[a[n], {n, 35, 60}] (* Jean-François Alcover, Feb 11 2015, after Alois P. Heinz *) CROSSREFS Column k=5 of A242896. Sequence in context: A204054 A206196 A272517 * A248710 A342350 A015365 Adjacent sequences: A246229 A246230 A246231 * A246233 A246234 A246235 KEYWORD nonn AUTHOR Alois P. Heinz, Aug 19 2014 STATUS approved

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Last modified June 23 08:04 EDT 2024. Contains 373629 sequences. (Running on oeis4.)