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.

A125841 Numbers k such that previous_prime(k)=k-sd and next_prime(k)=k+sd where sd is sum of the distinct prime factors of k.

Table of values

n a(n)
1 144
2 288
3 1728
4 5184
5 7168
6 11760
7 21632
8 21952
9 73500
10 110592
11 113400
12 114244
13 151263
14 153790
15 186624
16 205800
17 235298
18 250563
19 663552
20 708588
21 1404928
22 2976750
23 3449628
24 4738500
25 5265000
26 7077888
27 9437184
28 11529602
29 11745162

List of values

[144, 288, 1728, 5184, 7168, 11760, 21632, 21952, 73500, 110592, 113400, 114244, 151263, 153790, 186624, 205800, 235298, 250563, 663552, 708588, 1404928, 2976750, 3449628, 4738500, 5265000, 7077888, 9437184, 11529602, 11745162]

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

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