A292150 - OEIS

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A292150

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

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 3, 0, 1, 1, 1, 1, 1, 1, 5, 0, 3, 1, 1, 1, 3, 3, 5, 1, 1, 2, 8, 1, 3, 2, 7, 3, 3, 5, 4, 2, 8, 3, 12, 2, 4, 7, 7, 3, 6, 6, 15, 3, 5, 8, 12, 7, 9, 5, 15, 4, 12, 11, 11, 7, 6

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,30

COMMENTS

Illustrated with other convex polyabolos in A245676.

LINKS

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

EXAMPLE

The smallest convex octagonal polyabolos are for n = 14 and n = 20; both are symmetrical.

CROSSREFS

Strictly less than A245676.

Sequence in context: A110700 A375032 A338939 * A181875 A051908 A056614