A051611 - cp's OEIS frontend

A051611 Numbers that are not the sum of 2 nonzero triangular numbers.

n	a(n)
1	1
2	3
3	5
4	8
5	10
6	14
7	15
8	17
9	19
10	23
11	26
12	28
13	32
14	33
15	35
16	40
17	41
18	44
19	45
20	47
21	50
22	52
23	53
24	54
25	59
26	62
27	63
28	68
29	71
30	74
31	75
32	77
33	78
34	80
35	82
36	85
37	86
38	89
39	95
40	96
41	98
42	103
43	104
44	105
45	107
46	109
47	113
48	116
49	117
50	118
51	122
52	124
53	125
54	128
55	129
56	131
57	134
58	138
59	140
60	143
61	145
62	147

[1, 3, 5, 8, 10, 14, 15, 17, 19, 23, 26, 28, 32, 33, 35, 40, 41, 44, 45, 47, 50, 52, 53, 54, 59, 62, 63, 68, 71, 74, 75, 77, 78, 80, 82, 85, 86, 89, 95, 96, 98, 103, 104, 105, 107, 109, 113, 116, 117, 118, 122, 124, 125, 128, 129, 131, 134, 138, 140, 143, 145, 147]

cp's OEIS Frontend

A051611 Numbers that are not the sum of 2 nonzero triangular numbers.

Table of values

List of values

n	a(n)
1	1
2	3
3	5
4	8
5	10
6	14
7	15
8	17
9	19
10	23
11	26
12	28
13	32
14	33
15	35
16	40
17	41
18	44
19	45
20	47
21	50
22	52
23	53
24	54
25	59
26	62
27	63
28	68
29	71
30	74
31	75
32	77
33	78
34	80
35	82
36	85
37	86
38	89
39	95
40	96
41	98
42	103
43	104
44	105
45	107
46	109
47	113
48	116
49	117
50	118
51	122
52	124
53	125
54	128
55	129
56	131
57	134
58	138
59	140
60	143
61	145
62	147

n	a(n)
1	1
2	3
3	5
4	8
5	10
6	14
7	15
8	17
9	19
10	23
11	26
12	28
13	32
14	33
15	35
16	40
17	41
18	44
19	45
20	47
21	50
22	52
23	53
24	54
25	59
26	62
27	63
28	68
29	71
30	74
31	75
32	77
33	78
34	80
35	82
36	85
37	86
38	89
39	95
40	96
41	98
42	103
43	104
44	105
45	107
46	109
47	113
48	116
49	117
50	118
51	122
52	124
53	125
54	128
55	129
56	131
57	134
58	138
59	140
60	143
61	145
62	147

n	a(n)
1	1
2	3
3	5
4	8
5	10
6	14
7	15
8	17
9	19
10	23
11	26
12	28
13	32
14	33
15	35
16	40
17	41
18	44
19	45
20	47
21	50
22	52
23	53
24	54
25	59
26	62
27	63
28	68
29	71
30	74
31	75
32	77
33	78
34	80
35	82
36	85
37	86
38	89
39	95
40	96
41	98
42	103
43	104
44	105
45	107
46	109
47	113
48	116
49	117
50	118
51	122
52	124
53	125
54	128
55	129
56	131
57	134
58	138
59	140
60	143
61	145
62	147