A257274 - cp's OEIS frontend

A257274 Numbers whose square can be written as sum of at least 3 consecutive triangular numbers (A000217).

n	a(n)
1	8
2	10
3	19
4	26
5	44
6	58
7	79
8	84
9	91
10	105
11	111
12	121
13	135
14	140
15	154
16	172
17	184
18	188
19	195
20	203
21	208
22	212
23	217
24	222
25	230
26	240
27	246
28	265
29	276
30	286
31	292
32	316
33	322
34	329
35	338
36	364
37	390
38	426
39	429
40	462
41	490
42	498
43	506
44	548
45	550
46	605
47	704
48	714
49	715
50	763
51	770
52	780
53	782
54	807

[8, 10, 19, 26, 44, 58, 79, 84, 91, 105, 111, 121, 135, 140, 154, 172, 184, 188, 195, 203, 208, 212, 217, 222, 230, 240, 246, 265, 276, 286, 292, 316, 322, 329, 338, 364, 390, 426, 429, 462, 490, 498, 506, 548, 550, 605, 704, 714, 715, 763, 770, 780, 782, 807]

cp's OEIS Frontend

A257274 Numbers whose square can be written as sum of at least 3 consecutive triangular numbers (A000217).

Table of values

List of values

n	a(n)
1	8
2	10
3	19
4	26
5	44
6	58
7	79
8	84
9	91
10	105
11	111
12	121
13	135
14	140
15	154
16	172
17	184
18	188
19	195
20	203
21	208
22	212
23	217
24	222
25	230
26	240
27	246
28	265
29	276
30	286
31	292
32	316
33	322
34	329
35	338
36	364
37	390
38	426
39	429
40	462
41	490
42	498
43	506
44	548
45	550
46	605
47	704
48	714
49	715
50	763
51	770
52	780
53	782
54	807

n	a(n)
1	8
2	10
3	19
4	26
5	44
6	58
7	79
8	84
9	91
10	105
11	111
12	121
13	135
14	140
15	154
16	172
17	184
18	188
19	195
20	203
21	208
22	212
23	217
24	222
25	230
26	240
27	246
28	265
29	276
30	286
31	292
32	316
33	322
34	329
35	338
36	364
37	390
38	426
39	429
40	462
41	490
42	498
43	506
44	548
45	550
46	605
47	704
48	714
49	715
50	763
51	770
52	780
53	782
54	807

n	a(n)
1	8
2	10
3	19
4	26
5	44
6	58
7	79
8	84
9	91
10	105
11	111
12	121
13	135
14	140
15	154
16	172
17	184
18	188
19	195
20	203
21	208
22	212
23	217
24	222
25	230
26	240
27	246
28	265
29	276
30	286
31	292
32	316
33	322
34	329
35	338
36	364
37	390
38	426
39	429
40	462
41	490
42	498
43	506
44	548
45	550
46	605
47	704
48	714
49	715
50	763
51	770
52	780
53	782
54	807