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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.

A078259 a(n) = denominator(N), where N = 0.135..(2n-1) is the concatenation of the first n odd numbers after decimal point.

Table of values

n a(n)
1 10
2 100
3 200
4 10000
5 100000
6 10000000
7 1000000000
8 20000000000
9 10000000000000
10 1000000000000000
11 100000000000000000
12 10000000000000000000
13 40000000000000000000
14 100000000000000000000000
15 10000000000000000000000000
16 1000000000000000000000000000

List of values

[10, 100, 200, 10000, 100000, 10000000, 1000000000, 20000000000, 10000000000000, 1000000000000000, 100000000000000000, 10000000000000000000, 40000000000000000000, 100000000000000000000000, 10000000000000000000000000, 1000000000000000000000000000]

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

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