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.

A101291 Sum of all numbers with n digits.

Table of values

n a(n)
1 45
2 4905
3 494550
4 49495500
5 4949955000
6 494999550000
7 49499995500000
8 4949999955000000
9 494999999550000000
10 49499999995500000000
11 4949999999955000000000
12 494999999999550000000000
13 49499999999995500000000000
14 4949999999999955000000000000

List of values

[45, 4905, 494550, 49495500, 4949955000, 494999550000, 49499995500000, 4949999955000000, 494999999550000000, 49499999995500000000, 4949999999955000000000, 494999999999550000000000, 49499999999995500000000000, 4949999999999955000000000000]

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

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