A303854 Number of pairs (lambda,mu) of partitions lambda of n and mu of four with mu <= lambda (by diagram containment).

5, 12, 25, 42, 70, 105, 158, 223, 319, 434, 595, 793, 1059, 1382, 1811, 2329, 3003, 3819, 4858, 6114, 7701, 9607, 11984, 14843, 18370, 22594, 27774, 33953, 41473, 50430, 61250, 74102, 89555, 107842, 129715, 155550, 186298, 222508, 265444, 315864, 375415

Offset

4,1

Links

Alois P. Heinz, Table of n, a(n) for n = 4..1000

Eric Weisstein's World of Mathematics, Ferrers Diagram

Wikipedia, Ferrers diagram

Crossrefs

Column k=4 of A259478.

Sequence in context: A082019 A336877 A212058 * A331714 A086168 A301748

Adjacent sequences: A303851 A303852 A303853 * A303855 A303856 A303857

Keyword

nonn

Author

Alois P. Heinz, May 01 2018

Status

approved