A332428 - OEIS

%I #17 May 16 2020 06:56:36

%S 135,2395,16434,53155,141147,293374,565767,966493,1580940,2411533,

%T 3581613,5070655,7057026,9493435,12594564,16307974,20902338,26269597,

%U 32760774,40217905,49049919,59090671,70803180

%N The number of vertices on a nonagon formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.

%C See the links in A332421 for images of the nonagons.

%Y Cf. A332421 (regions), A332427 (n-gons), A332429 (edges), A330846, A092866, A332599, A007569.

%K nonn,more

%O 1,1

%A _Scott R. Shannon_ and _N. J. A. Sloane_, Mar 09 2020

%E a(6)-a(23) from _Lars Blomberg_, May 16 2020