A393262 Number of plane partitions of n with exactly one smallest part.

1, 1, 3, 3, 9, 9, 22, 26, 54, 65, 131, 163, 296, 396, 670, 906, 1492, 2034, 3222, 4481, 6874, 9577, 14469, 20173, 29876, 41808, 60995, 85154, 122966, 171272, 244679, 340259, 481677, 667652, 938521, 1296494, 1809771, 2492556, 3458214, 4746111, 6550109, 8958615

Offset

1,3

Links

Felix Huber, Table of n, a(n) for n = 1..60

Felix Huber, Python program

Example

a(4) = 3:  4   3 1   3
                     1

Prog

(Python) # See Huber link

Crossrefs

Column k=1 of A392357.

Cf. A000219, A002865, A392995.

Sequence in context: A146068 A146911 A146250 * A232023 A146695 A146442

Adjacent sequences: A393259 A393260 A393261 * A393263 A393264 A393265

Keyword

nonn

Author

John Tyler Rascoe, Feb 07 2026

Extensions

a(31) onward from Felix Huber, Feb 28 2026

Status

approved