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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.

A343586 a(n) = the sum of all the multiples of 2 or 5 less than or equal to 10^n.

Table of values

n a(n)
1 35
2 3050
3 300500
4 30005000
5 3000050000
6 300000500000
7 30000005000000
8 3000000050000000
9 300000000500000000
10 30000000005000000000
11 3000000000050000000000
12 300000000000500000000000
13 30000000000005000000000000
14 3000000000000050000000000000

List of values

[35, 3050, 300500, 30005000, 3000050000, 300000500000, 30000005000000, 3000000050000000, 300000000500000000, 30000000005000000000, 3000000000050000000000, 300000000000500000000000, 30000000000005000000000000, 3000000000000050000000000000]

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

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