A292147 Number of distinct convex pentagons that can be formed from n congruent isosceles right triangles. Reflections are not counted as distinct.

0, 0, 0, 0, 1, 1, 2, 0, 1, 2, 4, 1, 3, 5, 5, 2, 3, 2, 6, 5, 2, 8, 11, 1, 3, 7, 6, 7, 6, 7, 13, 7, 4, 8, 8, 5, 5, 13, 14, 8, 8, 4, 8, 14, 5, 17, 22, 5, 5, 7, 8, 14, 8, 14, 18, 13, 4, 11, 18, 7, 10, 22, 18, 15, 7, 9, 10, 19, 9, 16, 29, 8, 9, 12, 10, 23, 9, 19

Offset: 1

Author

Douglas J. Durian, Sep 10 2017

Keywords

• nonn

Comments

Illustrated with other convex polyabolos in A245676.

Examples

			The smallest convex pentagonal polyabolo is for n=5.
		

Links

• Douglas J. Durian, Table of n, a(n) for n = 1..750

Crossrefs

Strictly less than A245676.

Extensions

a(33) and beyond from Douglas J. Durian, Jan 24 2020