A189979 - cp's OEIS frontend

A189979 Number of right triangles, distinct up to congruence, on an n X n grid (or geoboard).

n	a(n)
1	0
2	1
3	4
4	9
5	17
6	26
7	39
8	53
9	71
10	91
11	114
12	136
13	169
14	197
15	231
16	267
17	310
18	346
19	397
20	437
21	492
22	548
23	606
24	654
25	729
26	791
27	858
28	928
29	1007
30	1071
31	1173
32	1241
33	1333
34	1423
35	1509
36	1600
37	1728
38	1814
39	1912
40	2015
41	2144

[0, 1, 4, 9, 17, 26, 39, 53, 71, 91, 114, 136, 169, 197, 231, 267, 310, 346, 397, 437, 492, 548, 606, 654, 729, 791, 858, 928, 1007, 1071, 1173, 1241, 1333, 1423, 1509, 1600, 1728, 1814, 1912, 2015, 2144]

cp's OEIS Frontend

A189979 Number of right triangles, distinct up to congruence, on an n X n grid (or geoboard).

Table of values

List of values