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.

A113939 Numbers k such that sigma(k) and phi(k) are both perfect cubes.

Table of values

n a(n)
1 1
2 300118
3 2250885
4 5294800
5 76336260
6 141483384
7 242375035
8 453280968
9 456345036
10 461356896
11 478240392
12 537375930
13 1139523375
14 1180718238
15 1227111595
16 1599634410
17 5043835125
18 5229921340
19 5610392513
20 6087775939
21 6376494509
22 11038341720
23 11044670824

List of values

[1, 300118, 2250885, 5294800, 76336260, 141483384, 242375035, 453280968, 456345036, 461356896, 478240392, 537375930, 1139523375, 1180718238, 1227111595, 1599634410, 5043835125, 5229921340, 5610392513, 6087775939, 6376494509, 11038341720, 11044670824]

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

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