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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.

A232449 The palindromic Belphegor numbers: (10^(n+3)+666)*10^(n+1)+1.

Table of values

n a(n)
0 16661
1 1066601
2 100666001
3 10006660001
4 1000066600001
5 100000666000001
6 10000006660000001
7 1000000066600000001
8 100000000666000000001
9 10000000006660000000001
10 1000000000066600000000001
11 100000000000666000000000001
12 10000000000006660000000000001
13 1000000000000066600000000000001

List of values

[16661, 1066601, 100666001, 10006660001, 1000066600001, 100000666000001, 10000006660000001, 1000000066600000001, 100000000666000000001, 10000000006660000000001, 1000000000066600000000001, 100000000000666000000000001, 10000000000006660000000000001, 1000000000000066600000000000001]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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