A260863 - cp's OEIS frontend

A260863 Base-13 representation of a(n) is the concatenation of the base-13 representations of 1, 2, ..., n, n-1, ..., 1.

n	a(n)
0	0
1	1
2	196
3	33489
4	5664400
5	957345481
6	161792190756
7	27342890695849
8	4620948663553600
9	780940325907974961
10	131978915101424183716
11	22304436652439380447009
12	3769449794266138309731600
13	8281481197999449959084458465
14	236527384496061684935031509169004

[0, 1, 196, 33489, 5664400, 957345481, 161792190756, 27342890695849, 4620948663553600, 780940325907974961, 131978915101424183716, 22304436652439380447009, 3769449794266138309731600, 8281481197999449959084458465, 236527384496061684935031509169004]

cp's OEIS Frontend

A260863 Base-13 representation of a(n) is the concatenation of the base-13 representations of 1, 2, ..., n, n-1, ..., 1.

Table of values

List of values