A378961 - cp's OEIS frontend

A378961 Number of sets of nonzero triangular numbers whose largest element is the n-th triangular number and whose sum is a triangular number.

n	a(n)
1	1
2	1
3	2
4	1
5	3
6	5
7	5
8	11
9	19
10	33
11	55
12	92
13	192
14	327
15	579
16	1142
17	2052
18	3776
19	6936
20	12964
21	24308
22	44432
23	84763
24	159299
25	299093
26	567295
27	1075570
28	2045580
29	3883453
30	7411014
31	14164089
32	27044407
33	51759660
34	99259961
35	190371661
36	365537357
37	702901278
38	1352868238
39	2606296357

[1, 1, 2, 1, 3, 5, 5, 11, 19, 33, 55, 92, 192, 327, 579, 1142, 2052, 3776, 6936, 12964, 24308, 44432, 84763, 159299, 299093, 567295, 1075570, 2045580, 3883453, 7411014, 14164089, 27044407, 51759660, 99259961, 190371661, 365537357, 702901278, 1352868238, 2606296357]

cp's OEIS Frontend

A378961 Number of sets of nonzero triangular numbers whose largest element is the n-th triangular number and whose sum is a triangular number.

Table of values

List of values