cp's OEIS Frontend

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.

A072290 Number of digits in the decimal expansion of the Champernowne constant that must be scanned to encounter all n-digit strings.

Table of values

n a(n)
0 1
1 11
2 192
3 2893
4 38894
5 488895
6 5888896
7 68888897
8 788888898
9 8888888899
10 98888888900
11 1088888888901
12 11888888888902
13 128888888888903
14 1388888888888904
15 14888888888888905
16 158888888888888906
17 1688888888888888907
18 17888888888888888908
19 188888888888888888909

List of values

[1, 11, 192, 2893, 38894, 488895, 5888896, 68888897, 788888898, 8888888899, 98888888900, 1088888888901, 11888888888902, 128888888888903, 1388888888888904, 14888888888888905, 158888888888888906, 1688888888888888907, 17888888888888888908, 188888888888888888909]

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

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