A072522 - cp's OEIS frontend

A072522 Smallest number a(n)>a(n-1) such that T(a(n-1))+T(a(n))=T(m) for some m, a(1)=3; T(i) are the triangular numbers.

n	a(n)
1	3
2	5
3	6
4	9
5	13
6	44
7	58
8	854
9	896
10	1194
11	1253
12	1469
13	1628
14	2170
15	2403
16	3205
17	3366
18	3395
19	4370
20	4454
21	4676
22	6234
23	6545
24	6873
25	9165
26	9624
27	12833
28	17110
29	17450
30	18524
31	24012
32	25025
33	25652
34	28242
35	37657
36	356750
37	400894
38	420938
39	561250
40	1347002

[3, 5, 6, 9, 13, 44, 58, 854, 896, 1194, 1253, 1469, 1628, 2170, 2403, 3205, 3366, 3395, 4370, 4454, 4676, 6234, 6545, 6873, 9165, 9624, 12833, 17110, 17450, 18524, 24012, 25025, 25652, 28242, 37657, 356750, 400894, 420938, 561250, 1347002]

cp's OEIS Frontend

A072522 Smallest number a(n)>a(n-1) such that T(a(n-1))+T(a(n))=T(m) for some m, a(1)=3; T(i) are the triangular numbers.

Table of values

List of values