A262492 - cp's OEIS frontend

A262492 The index of the first of two consecutive positive triangular numbers (A000217) the sum of which is equal to the sum of thirteen consecutive positive triangular numbers.

n	a(n)
1	25
2	90
3	207
4	1117
5	2560
6	9255
7	21202
8	114022
9	261195
10	944020
11	2162497
12	11629227
13	26639430
14	96280885
15	220553592
16	1186067232
17	2716960765
18	9819706350
19	22494303987
20	120967228537
21	277103358700
22	1001513766915
23	2294198453182
24	12337471243642
25	28261825626735

[25, 90, 207, 1117, 2560, 9255, 21202, 114022, 261195, 944020, 2162497, 11629227, 26639430, 96280885, 220553592, 1186067232, 2716960765, 9819706350, 22494303987, 120967228537, 277103358700, 1001513766915, 2294198453182, 12337471243642, 28261825626735]

cp's OEIS Frontend

A262492 The index of the first of two consecutive positive triangular numbers (A000217) the sum of which is equal to the sum of thirteen consecutive positive triangular numbers.

Table of values

List of values