A367117 - cp's OEIS frontend

A367117 Place n points in general position on each side of an equilateral triangle, and join every pair of the 3*n+3 boundary points by a chord; sequence gives number of vertices in the resulting planar graph.

n	a(n)
0	3
1	12
2	72
3	282
4	795
5	1818
6	3612
7	6492
8	10827
9	17040
10	25608
11	37062
12	51987
13	71022
14	94860
15	124248
16	159987
17	202932
18	253992
19	314130
20	384363
21	465762
22	559452
23	666612
24	788475
25	926328
26	1081512
27	1255422
28	1449507
29	1665270
30	1904268
31	2168112
32	2458467
33	2777052
34	3125640
35	3506058
36	3920187
37	4369962

[3, 12, 72, 282, 795, 1818, 3612, 6492, 10827, 17040, 25608, 37062, 51987, 71022, 94860, 124248, 159987, 202932, 253992, 314130, 384363, 465762, 559452, 666612, 788475, 926328, 1081512, 1255422, 1449507, 1665270, 1904268, 2168112, 2458467, 2777052, 3125640, 3506058, 3920187, 4369962]

cp's OEIS Frontend

A367117 Place n points in general position on each side of an equilateral triangle, and join every pair of the 3*n+3 boundary points by a chord; sequence gives number of vertices in the resulting planar graph.

Table of values

List of values