A002311 - cp's OEIS frontend

A002311 Numbers k such that the k-th tetrahedral number is the sum of 2 tetrahedral numbers.

n	a(n)
1	4
2	15
3	55
4	58
5	74
6	109
7	110
8	119
9	140
10	175
11	245
12	294
13	418
14	435
15	452
16	474
17	492
18	528
19	535
20	550
21	562
22	588
23	644
24	688
25	702
26	714
27	740
28	747
29	753
30	818
31	868
32	908
33	918
34	1098
35	1158
36	1220
37	1241
38	1428
39	1434
40	1444
41	1450
42	1645
43	1708
44	1738
45	1786
46	1868
47	2170
48	2183
49	2220
50	2256

[4, 15, 55, 58, 74, 109, 110, 119, 140, 175, 245, 294, 418, 435, 452, 474, 492, 528, 535, 550, 562, 588, 644, 688, 702, 714, 740, 747, 753, 818, 868, 908, 918, 1098, 1158, 1220, 1241, 1428, 1434, 1444, 1450, 1645, 1708, 1738, 1786, 1868, 2170, 2183, 2220, 2256]

cp's OEIS Frontend

A002311 Numbers k such that the k-th tetrahedral number is the sum of 2 tetrahedral numbers.

Table of values

List of values