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.

A282092 Numbers m such that there exists at least one integer k < m such that m^2+1 and k^2+1 have the same prime factors.

Table of values

n a(n)
1 7
2 18
3 117
4 239
5 378
6 843
7 2207
8 2943
9 4443
10 4662
11 6072
12 8307
13 8708
14 9872
15 31561
16 103682
17 271443
18 853932
19 1021693
20 3539232
21 3699356
22 6349657
23 6907607
24 7042807
25 7249325
26 9335094
27 12623932
28 12752043
29 12813848
30 22211431
31 33385282
32 42483057
33 52374157
34 105026693

List of values

[7, 18, 117, 239, 378, 843, 2207, 2943, 4443, 4662, 6072, 8307, 8708, 9872, 31561, 103682, 271443, 853932, 1021693, 3539232, 3699356, 6349657, 6907607, 7042807, 7249325, 9335094, 12623932, 12752043, 12813848, 22211431, 33385282, 42483057, 52374157, 105026693]

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

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