A330850 - cp's OEIS frontend

A330850 The number of vertices inside a cross with width 3 and height n (see Comments in A331455 for definition) formed by the straight line segments mutually connecting all vertices and all points.

n	a(n)
2	45
3	69
4	119
5	219
6	357
7	575
8	871
9	1301
10	1815
11	2543
12	3435
13	4635
14	6023
15	7731
16	9727
17	12259
18	15087
19	18585
20	22543
21	27165
22	32215
23	38239
24	44899
25	52631
26	60979
27	70465
28	80815
29	92749
30	105511
31	120079
32	135867
33	153331
34	171851
35	192311
36	214159
37	238583
38	264323
39	292371
40	322171

[45, 69, 119, 219, 357, 575, 871, 1301, 1815, 2543, 3435, 4635, 6023, 7731, 9727, 12259, 15087, 18585, 22543, 27165, 32215, 38239, 44899, 52631, 60979, 70465, 80815, 92749, 105511, 120079, 135867, 153331, 171851, 192311, 214159, 238583, 264323, 292371, 322171]

cp's OEIS Frontend

A330850 The number of vertices inside a cross with width 3 and height n (see Comments in A331455 for definition) formed by the straight line segments mutually connecting all vertices and all points.

Table of values

List of values