A241237 - cp's OEIS frontend

A241237 Number of isosceles triangles, distinct up to congruence, on a centered hexagonal grid of size n.

n	a(n)
1	0
2	3
3	15
4	35
5	69
6	106
7	162
8	222
9	300
10	382
11	486
12	587
13	715
14	840
15	997
16	1147
17	1313
18	1491
19	1700
20	1890
21	2129
22	2341
23	2598
24	2842
25	3126
26	3394
27	3711
28	3995
29	4341
30	4641
31	5024
32	5349
33	5750
34	6128
35	6540
36	6959
37	7381
38	7772
39	8255
40	8722
41	9252
42	9688
43	10220
44	10698
45	11277
46	11806
47	12381
48	12905

[0, 3, 15, 35, 69, 106, 162, 222, 300, 382, 486, 587, 715, 840, 997, 1147, 1313, 1491, 1700, 1890, 2129, 2341, 2598, 2842, 3126, 3394, 3711, 3995, 4341, 4641, 5024, 5349, 5750, 6128, 6540, 6959, 7381, 7772, 8255, 8722, 9252, 9688, 10220, 10698, 11277, 11806, 12381, 12905]

cp's OEIS Frontend

A241237 Number of isosceles triangles, distinct up to congruence, on a centered hexagonal grid of size n.

Table of values

List of values