A258283 Number of partitions of 5 copies of n into distinct parts.
1, 1, 6, 8, 29, 47, 134, 213, 559, 939, 2178, 3564, 8184, 13225, 27904, 46376, 93151, 153022, 302948, 489271, 931845, 1540667, 2818014, 4565768, 8369128, 13423638, 23782711, 38552461, 66714197, 106889113, 184313769, 291358130, 491972639, 785299762, 1298230358
Offset: 9
Keywords
Examples
a(11) = 6: [11;10,1;9,2;8,3;7,4], [11;10,1;9,2;8,3;6,5], [11;10,1;9,2;7,4;6,5], [11;10,1;8,3;7,4;6,5], [11;9,2;8,3;7,4;6,5], [10,1;9,2;8,3;7,4;6,5].
Links
- Alois P. Heinz, Table of n, a(n) for n = 9..50
Crossrefs
Column k=5 of A258280.
Formula
a(n) = 1/5! * [(x*y*z*u*v)^n] Product_{j>0} (1+x^j+y^j+z^j+u^j+v^j).