A367277 - cp's OEIS frontend

A367277 Place n equally spaced points on each side of a square, and join each of these points by a chord to the 3*n new points on the other three sides: sequence gives number of interior vertices in the resulting planar graph.

n	a(n)
0	0
1	1
2	57
3	329
4	1317
5	2861
6	7417
7	12801
8	23329
9	36549
10	64625
11	80085
12	138261
13	176829
14	233705
15	311949
16	455205
17	513205
18	741889
19	819509
20	1046161
21	1310673
22	1692869
23	1772001
24	2315189
25	2713893
26	3165017
27	3552641
28	4538729
29	4602865
30	6015437
31	6432553
32	7421213
33	8550349
34	9439481
35	10063849
36	12635621

[0, 1, 57, 329, 1317, 2861, 7417, 12801, 23329, 36549, 64625, 80085, 138261, 176829, 233705, 311949, 455205, 513205, 741889, 819509, 1046161, 1310673, 1692869, 1772001, 2315189, 2713893, 3165017, 3552641, 4538729, 4602865, 6015437, 6432553, 7421213, 8550349, 9439481, 10063849, 12635621]

cp's OEIS Frontend

A367277 Place n equally spaced points on each side of a square, and join each of these points by a chord to the 3*n new points on the other three sides: sequence gives number of interior vertices in the resulting planar graph.

Table of values

List of values