A260859 - cp's OEIS frontend

A260859 Base-9 representation of a(n) is the concatenation of the base-9 representations of 1, 2, ..., n, n-1, ..., 1.

n	a(n)
0	0
1	1
2	100
3	8281
4	672400
5	54479161
6	4412944900
7	357449732641
8	28953439105600
9	21107054541321649
10	138483384602892402628
11	908589486379899193778809
12	5961255620138564686107812272
13	39111798123729126657669459066697
14	256612507489786800304910707633347364

[0, 1, 100, 8281, 672400, 54479161, 4412944900, 357449732641, 28953439105600, 21107054541321649, 138483384602892402628, 908589486379899193778809, 5961255620138564686107812272, 39111798123729126657669459066697, 256612507489786800304910707633347364]

cp's OEIS Frontend

A260859 Base-9 representation of a(n) is the concatenation of the base-9 representations of 1, 2, ..., n, n-1, ..., 1.

Table of values

List of values