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

Author

Alois P. Heinz, May 01 2018

Keywords

• nonn

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.