A227561 Number of partitions of n into distinct parts with boundary size 4.

1, 1, 3, 4, 6, 9, 14, 16, 22, 28, 35, 42, 53, 62, 73, 86, 98, 114, 134, 148, 168, 192, 212, 235, 264, 289, 320, 355, 385, 419, 461, 495, 538, 586, 626, 674, 734, 779, 835, 898, 951, 1013, 1087, 1147, 1219, 1300, 1367, 1447, 1542, 1614, 1701, 1801, 1887, 1982

Offset

12,3

Comments

The boundary size is the number of parts having fewer than two neighbors.

Links

Alois P. Heinz, Table of n, a(n) for n = 12..1000

Crossrefs

Column k=4 of A227345, A227551.

Sequence in context: A090867 A152950 A005626 * A352095 A030712 A025000

Adjacent sequences: A227558 A227559 A227560 * A227562 A227563 A227564

Keyword

nonn

Author

Alois P. Heinz, Jul 16 2013

Status

approved