A186434 - cp's OEIS frontend

A186434 Number of isosceles triangles that can be formed from the n^2 points of n X n grid of points (or geoboard).

n	a(n)
1	0
2	4
3	36
4	148
5	444
6	1064
7	2200
8	4024
9	6976
10	11284
11	17396
12	25620
13	36812
14	51216
15	69672
16	92656
17	121392
18	156092
19	198364
20	248292
21	307988
22	377816
23	459072
24	552216
25	660704
26	784076
27	924340
28	1082228
29	1261132
30	1460408
31	1684464
32	1931800
33	2208368

[0, 4, 36, 148, 444, 1064, 2200, 4024, 6976, 11284, 17396, 25620, 36812, 51216, 69672, 92656, 121392, 156092, 198364, 248292, 307988, 377816, 459072, 552216, 660704, 784076, 924340, 1082228, 1261132, 1460408, 1684464, 1931800, 2208368]

cp's OEIS Frontend

A186434 Number of isosceles triangles that can be formed from the n^2 points of n X n grid of points (or geoboard).

Table of values

List of values