

A335772


Irregular table read by rows: nsect the angles of a octagon. Then T(n,k) = number of ksided polygons in that figure for k >= 3.


4



0, 0, 0, 0, 0, 1, 8, 16, 8, 0, 0, 0, 1, 64, 32, 8, 112, 160, 24, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 56, 24, 224, 272, 72, 48, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 304, 176, 136, 8, 336, 224, 104, 80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 496, 320, 192, 40, 8
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OFFSET

1,7


COMMENTS

For n<=200 no polygon has more than 16 edges.
See A335769 for illustrations.


LINKS

Lars Blomberg, Table of n, a(n) for n = 1..2113 (the first 200 rows)


EXAMPLE

The table begins
0, 0, 0, 0, 0, 1;
8;
16, 8, 0, 0, 0, 1;
64, 32, 8;
112, 160, 24, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1;
56, 24;
224, 272, 72, 48, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1;
304, 176, 136, 8;
336, 224, 104, 80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1;
496, 320, 192, 40, 8;


CROSSREFS

Cf. A333076 (nsected sides, not angles), A335769 (regions), A335770 (vertices), A335771 (edges).
Sequence in context: A073926 A073925 A053321 * A299214 A174256 A037239
Adjacent sequences: A335769 A335770 A335771 * A335773 A335774 A335775


KEYWORD

nonn,tabf


AUTHOR

Lars Blomberg, Jun 23 2020


STATUS

approved



