A274794 - cp's OEIS frontend

A274794 Numbers n such that n^3 is the sum of two triangular numbers in exactly one way.

n	a(n)
1	0
2	1
3	3
4	4
5	7
6	9
7	10
8	19
9	24
10	25
11	34
12	37
13	39
14	42
15	49
16	54
17	55
18	72
19	73
20	78
21	85
22	87
23	93
24	94
25	102
26	108
27	109
28	118
29	138
30	142
31	147
32	157
33	160
34	165
35	168
36	175
37	192
38	195
39	202
40	210
41	214
42	220
43	228
44	232
45	243
46	247
47	249
48	250
49	252
50	253
51	258
52	267
53	273
54	274
55	279
56	289
57	297
58	312
59	333

[0, 1, 3, 4, 7, 9, 10, 19, 24, 25, 34, 37, 39, 42, 49, 54, 55, 72, 73, 78, 85, 87, 93, 94, 102, 108, 109, 118, 138, 142, 147, 157, 160, 165, 168, 175, 192, 195, 202, 210, 214, 220, 228, 232, 243, 247, 249, 250, 252, 253, 258, 267, 273, 274, 279, 289, 297, 312, 333]

cp's OEIS Frontend

A274794 Numbers n such that n^3 is the sum of two triangular numbers in exactly one way.

Table of values

List of values

n	a(n)
1	0
2	1
3	3
4	4
5	7
6	9
7	10
8	19
9	24
10	25
11	34
12	37
13	39
14	42
15	49
16	54
17	55
18	72
19	73
20	78
21	85
22	87
23	93
24	94
25	102
26	108
27	109
28	118
29	138
30	142
31	147
32	157
33	160
34	165
35	168
36	175
37	192
38	195
39	202
40	210
41	214
42	220
43	228
44	232
45	243
46	247
47	249
48	250
49	252
50	253
51	258
52	267
53	273
54	274
55	279
56	289
57	297
58	312
59	333

n	a(n)
1	0
2	1
3	3
4	4
5	7
6	9
7	10
8	19
9	24
10	25
11	34
12	37
13	39
14	42
15	49
16	54
17	55
18	72
19	73
20	78
21	85
22	87
23	93
24	94
25	102
26	108
27	109
28	118
29	138
30	142
31	147
32	157
33	160
34	165
35	168
36	175
37	192
38	195
39	202
40	210
41	214
42	220
43	228
44	232
45	243
46	247
47	249
48	250
49	252
50	253
51	258
52	267
53	273
54	274
55	279
56	289
57	297
58	312
59	333

n	a(n)
1	0
2	1
3	3
4	4
5	7
6	9
7	10
8	19
9	24
10	25
11	34
12	37
13	39
14	42
15	49
16	54
17	55
18	72
19	73
20	78
21	85
22	87
23	93
24	94
25	102
26	108
27	109
28	118
29	138
30	142
31	147
32	157
33	160
34	165
35	168
36	175
37	192
38	195
39	202
40	210
41	214
42	220
43	228
44	232
45	243
46	247
47	249
48	250
49	252
50	253
51	258
52	267
53	273
54	274
55	279
56	289
57	297
58	312
59	333