A303853 Number of pairs (lambda,mu) of partitions lambda of n and mu of three with mu <= lambda (by diagram containment).

3, 7, 13, 23, 35, 54, 78, 112, 154, 215, 287, 387, 510, 673, 871, 1133, 1448, 1857, 2352, 2980, 3739, 4697, 5846, 7278, 9000, 11122, 13663, 16778, 20492, 25011, 30393, 36892, 44611, 53891, 64871, 78003, 93513, 111970, 133705, 159476, 189737, 225477, 267354

Offset

3,1

Links

Alois P. Heinz, Table of n, a(n) for n = 3..1000

Eric Weisstein's World of Mathematics, Ferrers Diagram

Wikipedia, Ferrers diagram

Crossrefs

Column k=3 of A259478.

Sequence in context: A124129 A101301 A103116 * A075321 A258030 A164787

Adjacent sequences: A303850 A303851 A303852 * A303854 A303855 A303856

Keyword

nonn

Author

Alois P. Heinz, May 01 2018

Status

approved