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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.

A274755 Repunits with even indices multiplied by 99, i.e., 99*(11, 1111, 111111, 11111111, ...).

Table of values

n a(n)
1 1089
2 109989
3 10999989
4 1099999989
5 109999999989
6 10999999999989
7 1099999999999989
8 109999999999999989
9 10999999999999999989
10 1099999999999999999989
11 109999999999999999999989
12 10999999999999999999999989
13 1099999999999999999999999989

List of values

[1089, 109989, 10999989, 1099999989, 109999999989, 10999999999989, 1099999999999989, 109999999999999989, 10999999999999999989, 1099999999999999999989, 109999999999999999999989, 10999999999999999999999989, 1099999999999999999999999989]

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

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