cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A156577 a(2*n+2) = 10*a(2*n+1), a(2*n+1) = 10*a(2*n) - 9^n*A000108(n), a(0) = 1.

Table of values

n a(n)
0 1
1 9
2 90
3 891
4 8910
5 88938
6 889380
7 8890155
8 88901550
9 888923646
10 8889236460
11 88889884542
12 888898845420
13 8888918303988
14 88889183039880
15 888889778505099
16 8888897785050990
17 88888916293698870
18 888889162936988700

List of values

[1, 9, 90, 891, 8910, 88938, 889380, 8890155, 88901550, 888923646, 8889236460, 88889884542, 888898845420, 8888918303988, 88889183039880, 888889778505099, 8888897785050990, 88888916293698870, 888889162936988700]