A076816 - cp's OEIS frontend

A076816 Squares modulo triangular numbers: n^2 minus the greatest triangular number smaller than or equal to n^2.

n	a(n)
0	0
1	0
2	1
3	3
4	1
5	4
6	0
7	4
8	9
9	3
10	9
11	1
12	8
13	16
14	6
15	15
16	3
17	13
18	24
19	10
20	22
21	6
22	19
23	1
24	15
25	30
26	10
27	26
28	4
29	21
30	39
31	15
32	34
33	8
34	28
35	0
36	21
37	43
38	13
39	36
40	4
41	28
42	53
43	19
44	45
45	9
46	36
47	64
48	26
49	55
50	15
51	45
52	3
53	34
54	66
55	22
56	55
57	9
58	43
59	78
60	30
61	66
62	16
63	53
64	1
65	39
66	78
67	24
68	64
69	8
70	49
71	91
72	33
73	76
74	16
75	60
76	105
77	43

[0, 0, 1, 3, 1, 4, 0, 4, 9, 3, 9, 1, 8, 16, 6, 15, 3, 13, 24, 10, 22, 6, 19, 1, 15, 30, 10, 26, 4, 21, 39, 15, 34, 8, 28, 0, 21, 43, 13, 36, 4, 28, 53, 19, 45, 9, 36, 64, 26, 55, 15, 45, 3, 34, 66, 22, 55, 9, 43, 78, 30, 66, 16, 53, 1, 39, 78, 24, 64, 8, 49, 91, 33, 76, 16, 60, 105, 43]

cp's OEIS Frontend

A076816 Squares modulo triangular numbers: n^2 minus the greatest triangular number smaller than or equal to n^2.

Table of values

List of values

n	a(n)
0	0
1	0
2	1
3	3
4	1
5	4
6	0
7	4
8	9
9	3
10	9
11	1
12	8
13	16
14	6
15	15
16	3
17	13
18	24
19	10
20	22
21	6
22	19
23	1
24	15
25	30
26	10
27	26
28	4
29	21
30	39
31	15
32	34
33	8
34	28
35	0
36	21
37	43
38	13
39	36
40	4
41	28
42	53
43	19
44	45
45	9
46	36
47	64
48	26
49	55
50	15
51	45
52	3
53	34
54	66
55	22
56	55
57	9
58	43
59	78
60	30
61	66
62	16
63	53
64	1
65	39
66	78
67	24
68	64
69	8
70	49
71	91
72	33
73	76
74	16
75	60
76	105
77	43

n	a(n)
0	0
1	0
2	1
3	3
4	1
5	4
6	0
7	4
8	9
9	3
10	9
11	1
12	8
13	16
14	6
15	15
16	3
17	13
18	24
19	10
20	22
21	6
22	19
23	1
24	15
25	30
26	10
27	26
28	4
29	21
30	39
31	15
32	34
33	8
34	28
35	0
36	21
37	43
38	13
39	36
40	4
41	28
42	53
43	19
44	45
45	9
46	36
47	64
48	26
49	55
50	15
51	45
52	3
53	34
54	66
55	22
56	55
57	9
58	43
59	78
60	30
61	66
62	16
63	53
64	1
65	39
66	78
67	24
68	64
69	8
70	49
71	91
72	33
73	76
74	16
75	60
76	105
77	43

n	a(n)
0	0
1	0
2	1
3	3
4	1
5	4
6	0
7	4
8	9
9	3
10	9
11	1
12	8
13	16
14	6
15	15
16	3
17	13
18	24
19	10
20	22
21	6
22	19
23	1
24	15
25	30
26	10
27	26
28	4
29	21
30	39
31	15
32	34
33	8
34	28
35	0
36	21
37	43
38	13
39	36
40	4
41	28
42	53
43	19
44	45
45	9
46	36
47	64
48	26
49	55
50	15
51	45
52	3
53	34
54	66
55	22
56	55
57	9
58	43
59	78
60	30
61	66
62	16
63	53
64	1
65	39
66	78
67	24
68	64
69	8
70	49
71	91
72	33
73	76
74	16
75	60
76	105
77	43