A091358 Number of planar partitions of n with exactly 4 rows.

1, 2, 5, 11, 24, 46, 90, 164, 298, 520, 899, 1512, 2521, 4116, 6659, 10609, 16753, 26126, 40419, 61889, 94067, 141736, 212123, 315087, 465162, 682188, 994857, 1442340, 2080332, 2984724, 4262018, 6056849, 8569913, 12072770, 16938556

Offset: 4

Author

Christian G. Bower, Jan 02 2004

Keywords

• nonn

Crossrefs

Column 4 of A091355. Cf. A000219, A091356-A091360.

Formula

a(n) = A002799(n)-A000991(n).