A210449 - cp's OEIS frontend

A210449 Numbers that are the sum of three triangular numbers an odd number of ways.

n	a(n)
1	0
2	1
3	2
4	5
5	7
6	8
7	9
8	10
9	12
10	13
11	16
12	17
13	18
14	20
15	21
16	22
17	26
18	28
19	30
20	31
21	34
22	35
23	38
24	41
25	43
26	45
27	47
28	48
29	52
30	55
31	58
32	59
33	61
34	62
35	63
36	65
37	66
38	67
39	68
40	70
41	71
42	73
43	75
44	77
45	80
46	82
47	85
48	86
49	92
50	93
51	98
52	101
53	103
54	107
55	108
56	110
57	111
58	113
59	116
60	118
61	120
62	121
63	127

[0, 1, 2, 5, 7, 8, 9, 10, 12, 13, 16, 17, 18, 20, 21, 22, 26, 28, 30, 31, 34, 35, 38, 41, 43, 45, 47, 48, 52, 55, 58, 59, 61, 62, 63, 65, 66, 67, 68, 70, 71, 73, 75, 77, 80, 82, 85, 86, 92, 93, 98, 101, 103, 107, 108, 110, 111, 113, 116, 118, 120, 121, 127]

cp's OEIS Frontend

A210449 Numbers that are the sum of three triangular numbers an odd number of ways.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	5
5	7
6	8
7	9
8	10
9	12
10	13
11	16
12	17
13	18
14	20
15	21
16	22
17	26
18	28
19	30
20	31
21	34
22	35
23	38
24	41
25	43
26	45
27	47
28	48
29	52
30	55
31	58
32	59
33	61
34	62
35	63
36	65
37	66
38	67
39	68
40	70
41	71
42	73
43	75
44	77
45	80
46	82
47	85
48	86
49	92
50	93
51	98
52	101
53	103
54	107
55	108
56	110
57	111
58	113
59	116
60	118
61	120
62	121
63	127

n	a(n)
1	0
2	1
3	2
4	5
5	7
6	8
7	9
8	10
9	12
10	13
11	16
12	17
13	18
14	20
15	21
16	22
17	26
18	28
19	30
20	31
21	34
22	35
23	38
24	41
25	43
26	45
27	47
28	48
29	52
30	55
31	58
32	59
33	61
34	62
35	63
36	65
37	66
38	67
39	68
40	70
41	71
42	73
43	75
44	77
45	80
46	82
47	85
48	86
49	92
50	93
51	98
52	101
53	103
54	107
55	108
56	110
57	111
58	113
59	116
60	118
61	120
62	121
63	127

n	a(n)
1	0
2	1
3	2
4	5
5	7
6	8
7	9
8	10
9	12
10	13
11	16
12	17
13	18
14	20
15	21
16	22
17	26
18	28
19	30
20	31
21	34
22	35
23	38
24	41
25	43
26	45
27	47
28	48
29	52
30	55
31	58
32	59
33	61
34	62
35	63
36	65
37	66
38	67
39	68
40	70
41	71
42	73
43	75
44	77
45	80
46	82
47	85
48	86
49	92
50	93
51	98
52	101
53	103
54	107
55	108
56	110
57	111
58	113
59	116
60	118
61	120
62	121
63	127