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.

A128678 Numbers k such that k^3 divides 4^(k^2) + 1.

Table of values

n a(n)
1 1
2 5
3 205
4 505
5 20705
6 40505
7 168305
8 408545
9 1342505
10 1660705
11 2084645
12 4091005
13 10201505
14 16322105
15 16750345
16 16998805
17 37217545
18 49985405
19 55042705
20 117165905
21 135593005
22 167731205
23 186678805
24 210549145
25 218301905
26 418261705

List of values

[1, 5, 205, 505, 20705, 40505, 168305, 408545, 1342505, 1660705, 2084645, 4091005, 10201505, 16322105, 16750345, 16998805, 37217545, 49985405, 55042705, 117165905, 135593005, 167731205, 186678805, 210549145, 218301905, 418261705]

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

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