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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.

A116056 n and pi(n) are both made of nontrivial runs of identical digits, where pi(n)=A000720(n).

Table of values

n a(n)
1 33
2 8833
3 66644
4 66777
5 117766
6 118811
7 990000
8 1144000
9 9997777
10 115522333
11 116660044
12 116661111
13 1100088555
14 1100088855
15 1100111100
16 1100111111
17 1100111333
18 1100112200
19 1100112211
20 1100112222
21 2277334444
22 2277334455
23 2277334466
24 2277334477
25 2277335500
26 2288811222

List of values

[33, 8833, 66644, 66777, 117766, 118811, 990000, 1144000, 9997777, 115522333, 116660044, 116661111, 1100088555, 1100088855, 1100111100, 1100111111, 1100111333, 1100112200, 1100112211, 1100112222, 2277334444, 2277334455, 2277334466, 2277334477, 2277335500, 2288811222]

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

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