A227559 Number of partitions of n into distinct parts with boundary size 2.

1, 1, 2, 3, 3, 3, 5, 5, 5, 6, 6, 7, 9, 7, 8, 10, 9, 10, 12, 11, 11, 12, 13, 13, 15, 14, 14, 17, 15, 15, 18, 17, 19, 19, 18, 19, 21, 20, 20, 23, 21, 22, 26, 23, 23, 24, 25, 26, 27, 26, 26, 29, 29, 28, 30, 29, 29, 32, 30, 31, 35, 31, 34, 35, 33, 34, 36, 37, 35

Offset: 3

Author

Alois P. Heinz, Jul 16 2013

Keywords

• nonn

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 = 3..1000

Crossrefs

Column k=2 of A227345, A227551.