A303854 - OEIS

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A303854

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

2

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

(list; graph; refs; listen; history; text; internal format)

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