A130684 - cp's OEIS frontend

A130684 Triangle read by rows: T(n,k) = number of squares (not necessarily orthogonal) all of whose vertices lie in an (n + 1) X (k + 1) square lattice.

n	a(n)
1	1
2	2
3	6
4	3
5	10
6	20
7	4
8	14
9	30
10	50
11	5
12	18
13	40
14	70
15	105
16	6
17	22
18	50
19	90
20	140
21	196
22	7
23	26
24	60
25	110
26	175
27	252
28	336
29	8
30	30
31	70
32	130
33	210
34	308
35	420
36	540
37	9
38	34
39	80
40	150
41	245
42	364
43	504
44	660
45	825
46	10
47	38
48	90
49	170
50	280
51	420
52	588
53	780
54	990
55	1210
56	11
57	42
58	100
59	190
60	315
61	476
62	672

[1, 2, 6, 3, 10, 20, 4, 14, 30, 50, 5, 18, 40, 70, 105, 6, 22, 50, 90, 140, 196, 7, 26, 60, 110, 175, 252, 336, 8, 30, 70, 130, 210, 308, 420, 540, 9, 34, 80, 150, 245, 364, 504, 660, 825, 10, 38, 90, 170, 280, 420, 588, 780, 990, 1210, 11, 42, 100, 190, 315, 476, 672]

cp's OEIS Frontend

A130684 Triangle read by rows: T(n,k) = number of squares (not necessarily orthogonal) all of whose vertices lie in an (n + 1) X (k + 1) square lattice.

Table of values

List of values