A187452 - cp's OEIS frontend

A187452 Number of right 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	28
4	96
5	244
6	516
7	968
8	1664
9	2680
10	4100
11	6020
12	8544
13	11788
14	15876
15	20944
16	27136
17	34608
18	43524
19	54060
20	66400
21	80740
22	97284
23	116248
24	137856
25	162344
26	189956
27	220948
28	255584
29	294140
30	336900
31	384160
32	436224
33	493408
34	556036
35	624444
36	698976
37	779988
38	867844

[0, 4, 28, 96, 244, 516, 968, 1664, 2680, 4100, 6020, 8544, 11788, 15876, 20944, 27136, 34608, 43524, 54060, 66400, 80740, 97284, 116248, 137856, 162344, 189956, 220948, 255584, 294140, 336900, 384160, 436224, 493408, 556036, 624444, 698976, 779988, 867844]

cp's OEIS Frontend

A187452 Number of right 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