A265140 - cp's OEIS frontend

A265140 Numbers that are the sum of two distinct nonzero triangular numbers in exactly one way.

n	a(n)
1	4
2	7
3	9
4	11
5	13
6	18
7	21
8	22
9	24
10	25
11	27
12	29
13	34
14	36
15	37
16	38
17	39
18	42
19	43
20	48
21	49
22	55
23	56
24	57
25	58
26	60
27	61
28	64
29	65
30	66
31	67
32	69
33	70
34	72
35	73
36	79
37	83
38	84
39	87
40	88
41	91
42	92
43	93
44	97
45	99
46	100
47	101
48	102
49	108
50	112
51	114
52	115
53	119
54	120
55	127
56	130
57	135
58	136
59	137
60	139
61	142
62	144

[4, 7, 9, 11, 13, 18, 21, 22, 24, 25, 27, 29, 34, 36, 37, 38, 39, 42, 43, 48, 49, 55, 56, 57, 58, 60, 61, 64, 65, 66, 67, 69, 70, 72, 73, 79, 83, 84, 87, 88, 91, 92, 93, 97, 99, 100, 101, 102, 108, 112, 114, 115, 119, 120, 127, 130, 135, 136, 137, 139, 142, 144]

cp's OEIS Frontend

A265140 Numbers that are the sum of two distinct nonzero triangular numbers in exactly one way.

Table of values

List of values

n	a(n)
1	4
2	7
3	9
4	11
5	13
6	18
7	21
8	22
9	24
10	25
11	27
12	29
13	34
14	36
15	37
16	38
17	39
18	42
19	43
20	48
21	49
22	55
23	56
24	57
25	58
26	60
27	61
28	64
29	65
30	66
31	67
32	69
33	70
34	72
35	73
36	79
37	83
38	84
39	87
40	88
41	91
42	92
43	93
44	97
45	99
46	100
47	101
48	102
49	108
50	112
51	114
52	115
53	119
54	120
55	127
56	130
57	135
58	136
59	137
60	139
61	142
62	144

n	a(n)
1	4
2	7
3	9
4	11
5	13
6	18
7	21
8	22
9	24
10	25
11	27
12	29
13	34
14	36
15	37
16	38
17	39
18	42
19	43
20	48
21	49
22	55
23	56
24	57
25	58
26	60
27	61
28	64
29	65
30	66
31	67
32	69
33	70
34	72
35	73
36	79
37	83
38	84
39	87
40	88
41	91
42	92
43	93
44	97
45	99
46	100
47	101
48	102
49	108
50	112
51	114
52	115
53	119
54	120
55	127
56	130
57	135
58	136
59	137
60	139
61	142
62	144

n	a(n)
1	4
2	7
3	9
4	11
5	13
6	18
7	21
8	22
9	24
10	25
11	27
12	29
13	34
14	36
15	37
16	38
17	39
18	42
19	43
20	48
21	49
22	55
23	56
24	57
25	58
26	60
27	61
28	64
29	65
30	66
31	67
32	69
33	70
34	72
35	73
36	79
37	83
38	84
39	87
40	88
41	91
42	92
43	93
44	97
45	99
46	100
47	101
48	102
49	108
50	112
51	114
52	115
53	119
54	120
55	127
56	130
57	135
58	136
59	137
60	139
61	142
62	144