A361659 Number of strictly convex unit-sided polygons with all internal angles equal to a multiple of Pi/n, treating polygons that have a unique mirror image as distinct but ignoring rotational copies.

0, 1, 3, 4, 7, 17, 19, 34, 92, 115, 187, 616, 631, 1201, 6067, 4114, 7711, 35322, 27595, 59704, 328833, 190933, 364723, 2435778, 1579882, 2582059, 21013768, 9894292, 18512791, 377367013, 69273667, 134219794, 1678410949, 505301839, 1339499035, 14843799550

Offset

1,3

Links

Table of n, a(n) for n=1..36.

Formula

a(n) = A164896(2*n) - 2. - Andrew Howroyd, Mar 22 2023

Crossrefs

Cf. A164896, A262181, A361635 (up to rotations and reflections).

Sequence in context: A287752 A287493 A078825 * A331115 A327318 A344783

Adjacent sequences: A361656 A361657 A361658 * A361660 A361661 A361662

Keyword

nonn

Author

Roman Mecholsky, Mar 19 2023

Extensions

a(7) corrected and terms a(9) and beyond from Andrew Howroyd, Mar 22 2023

Status

approved