A052436
Number of canonical polygons of n sides.
Original entry on oeis.org
0, 0, 1, 3, 3, 9, 13, 52, 140, 501, 1763, 6785, 25571, 99907, 392230, 1564989, 6297892, 25601641, 104846143, 432629580
Offset: 1
Corrected and extended by Keith Schneider (schneidk(AT)email.unc.edu), Oct 25 2007
Offset changed to 1 and a(14)-a(18) from
Lars Blomberg, Feb 18 2019
A307387
a(n) is the number of canonical polygons with 4n alternating straight and diagonal edges.
Original entry on oeis.org
1, 9, 191, 8049, 418184, 24283599
Offset: 1
A307391
a(n) is the number of canonical polygons with 4n edges containing only right angles.
Original entry on oeis.org
2, 0, 2, 2, 8, 14, 62, 196, 892, 3788, 18098, 86302, 427340, 2136248
Offset: 1
A307426
a(n) is the number of canonical polygons with 4n edges having 4-fold rotational symmetry.
Original entry on oeis.org
2, 2, 7, 22, 79, 289, 1145, 4655, 19314, 81242, 345785, 1484065, 6414999, 27895652
Offset: 1
A307454
a(n) is the number of canonical polygons with 2n edges having 2-fold rotational symmetry.
Original entry on oeis.org
1, 3, 9, 33, 123, 513, 2077, 8759, 37184, 159508, 688446, 2993451, 13082724
Offset: 2
A307456
a(n) is the number of canonical polygons with 2n edges having exactly 2 lines of reflection symmetry.
Original entry on oeis.org
2, 2, 1, 4, 11, 24, 47, 99, 211, 437, 909, 1925
Offset: 2
A307519
a(n) is the number of canonical polygons with 4n edges having exactly 4 lines of reflection symmetry.
Original entry on oeis.org
2, 1, 2, 6, 10, 17, 34, 72, 142, 288, 585, 1195, 2413, 4898
Offset: 1
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