A292146 - OEIS

A292146

Number of different convex quadrilaterals that can be formed from n congruent isosceles right triangles. Reflections are not counted as different.

0, 2, 2, 5, 2, 5, 3, 9, 2, 5, 2, 11, 2, 6, 4, 13, 3, 7, 2, 11, 4, 5, 3, 19, 2, 5, 4, 12, 2, 10, 3, 17, 4, 6, 4, 16, 2, 5, 4, 19, 3, 10, 2, 11, 6, 6, 3, 27, 3, 7, 4, 11, 2, 10, 4, 20, 4, 5, 2, 22, 2, 6, 7, 21, 4, 10, 2, 12, 4, 10, 3, 28, 3, 5, 6, 11, 4, 10

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OFFSET

1,2

COMMENTS

Illustrated with other convex polyabolos in A245676.

LINKS

Andrew Howroyd, Table of n, a(n) for n = 1..1000

Andrew Howroyd, Convex Quadrilaterals formed from Polyabolos

EXAMPLE

For n=2, there is a square and a parallelogram.

PROG

(PARI) \\ here b is A100073