A064816 - cp's OEIS frontend

A064816 Numbers which are the sums of two positive triangular numbers (A000217) in exactly two different ways.

n	a(n)
1	16
2	31
3	42
4	46
5	51
6	56
7	72
8	76
9	94
10	111
11	121
12	123
13	126
14	133
15	141
16	146
17	157
18	172
19	174
20	186
21	191
22	196
23	198
24	216
25	225
26	226
27	231
28	237
29	241
30	246
31	259
32	268
33	281
34	286
35	289
36	291
37	297
38	301
39	306
40	310
41	315
42	321
43	326
44	328
45	336
46	342
47	346
48	354
49	366
50	367
51	379
52	380
53	384

[16, 31, 42, 46, 51, 56, 72, 76, 94, 111, 121, 123, 126, 133, 141, 146, 157, 172, 174, 186, 191, 196, 198, 216, 225, 226, 231, 237, 241, 246, 259, 268, 281, 286, 289, 291, 297, 301, 306, 310, 315, 321, 326, 328, 336, 342, 346, 354, 366, 367, 379, 380, 384]

cp's OEIS Frontend

A064816 Numbers which are the sums of two positive triangular numbers (A000217) in exactly two different ways.

Table of values

List of values

n	a(n)
1	16
2	31
3	42
4	46
5	51
6	56
7	72
8	76
9	94
10	111
11	121
12	123
13	126
14	133
15	141
16	146
17	157
18	172
19	174
20	186
21	191
22	196
23	198
24	216
25	225
26	226
27	231
28	237
29	241
30	246
31	259
32	268
33	281
34	286
35	289
36	291
37	297
38	301
39	306
40	310
41	315
42	321
43	326
44	328
45	336
46	342
47	346
48	354
49	366
50	367
51	379
52	380
53	384

n	a(n)
1	16
2	31
3	42
4	46
5	51
6	56
7	72
8	76
9	94
10	111
11	121
12	123
13	126
14	133
15	141
16	146
17	157
18	172
19	174
20	186
21	191
22	196
23	198
24	216
25	225
26	226
27	231
28	237
29	241
30	246
31	259
32	268
33	281
34	286
35	289
36	291
37	297
38	301
39	306
40	310
41	315
42	321
43	326
44	328
45	336
46	342
47	346
48	354
49	366
50	367
51	379
52	380
53	384

n	a(n)
1	16
2	31
3	42
4	46
5	51
6	56
7	72
8	76
9	94
10	111
11	121
12	123
13	126
14	133
15	141
16	146
17	157
18	172
19	174
20	186
21	191
22	196
23	198
24	216
25	225
26	226
27	231
28	237
29	241
30	246
31	259
32	268
33	281
34	286
35	289
36	291
37	297
38	301
39	306
40	310
41	315
42	321
43	326
44	328
45	336
46	342
47	346
48	354
49	366
50	367
51	379
52	380
53	384