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.

A268922 One of the two successive approximations up to 5^n for the 5-adic integer sqrt(-4). These are the 1 mod 5 numbers, except for n = 0.

Table of values

n a(n)
0 0
1 1
2 11
3 11
4 261
5 2136
6 2136
7 64636
8 220886
9 1392761
10 7252136
11 46314636
12 241627136
13 974049011
14 2194752136
15 8298267761
16 99851002136
17 710202564636
18 710202564636
19 12154294361511
20 31227780689636

List of values

[0, 1, 11, 11, 261, 2136, 2136, 64636, 220886, 1392761, 7252136, 46314636, 241627136, 974049011, 2194752136, 8298267761, 99851002136, 710202564636, 710202564636, 12154294361511, 31227780689636]

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

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