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.

A000993 Number of distinct quadratic residues mod 10^n; also number of distinct n-digit endings of base-10 squares.

Table of values

n a(n)
0 1
1 6
2 22
3 159
4 1044
5 9121
6 78132
7 748719
8 7161484
9 70800861
10 699869892
11 6978353179
12 69580078524
13 695292156201
14 6947835288052
15 69465637212039
16 694529215501164
17 6944974263529141
18 69446563720728612
19 694457689921141299
20 6944497426351013404

List of values

[1, 6, 22, 159, 1044, 9121, 78132, 748719, 7161484, 70800861, 699869892, 6978353179, 69580078524, 695292156201, 6947835288052, 69465637212039, 694529215501164, 6944974263529141, 69446563720728612, 694457689921141299, 6944497426351013404]

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

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