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.

A337855 Number of n-digit positive integers that are the product of two integers ending with 5.

Table of values

n a(n)
1 0
2 2
3 18
4 180
5 1800
6 18000
7 180000
8 1800000
9 18000000
10 180000000
11 1800000000
12 18000000000
13 180000000000
14 1800000000000
15 18000000000000
16 180000000000000
17 1800000000000000
18 18000000000000000
19 180000000000000000
20 1800000000000000000
21 18000000000000000000
22 180000000000000000000

List of values

[0, 2, 18, 180, 1800, 18000, 180000, 1800000, 18000000, 180000000, 1800000000, 18000000000, 180000000000, 1800000000000, 18000000000000, 180000000000000, 1800000000000000, 18000000000000000, 180000000000000000, 1800000000000000000, 18000000000000000000, 180000000000000000000]

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

Content is available under The OEIS End-User License Agreement.