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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.

A116225 n times n+1 gives the concatenation of two numbers m and m-9.

Table of values

n a(n)
1 12
2 878
3 969
4 4582271
5 5417729
6 7235911
7 7365332534826384966
8 8274423443917294057
9 3818527786666305707333509337803
10 6181472213333694292666490662197
11 7454891423029942070969872974167

List of values

[12, 878, 969, 4582271, 5417729, 7235911, 7365332534826384966, 8274423443917294057, 3818527786666305707333509337803, 6181472213333694292666490662197, 7454891423029942070969872974167]

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

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