A218879 Number of minimal elements in the poset PIT(n) arising from classification of primitive integral triangles with rectangular defect n.

2, 1, 1, 3, 2, 2, 3, 3, 7, 3, 3, 4, 6, 4, 4, 9, 8, 4, 5, 6, 8, 6, 5, 8, 18, 5, 5, 10, 10, 6, 9, 7, 14, 9, 6, 12, 14, 6, 8, 14, 16, 8, 9, 12, 12, 12, 7, 12, 33, 7, 10

Offset

1,1

Links

Table of n, a(n) for n=1..51.

Andy Miller, Trees of integral triangles with given rectangular defect, Discrete Math., 313 (2012), 50-66.

Crossrefs

Cf. A218878.

Sequence in context: A241950 A316776 A029308 * A340381 A029259 A159266

Adjacent sequences: A218876 A218877 A218878 * A218880 A218881 A218882

Keyword

nonn

Author

N. J. A. Sloane, Nov 26 2012

Status

approved