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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.

A196219 Numbers n such that n^2 is divisible by the sum of the distinct prime divisors of n^2 + 1.

Table of values

n a(n)
1 7
2 18
3 187
4 378
5 1560
6 1683
7 1710
8 1719
9 4697
10 7788
11 8832
12 10693
13 21708
14 22968
15 27378
16 28322
17 29032
18 30016
19 30635
20 32220
21 32368
22 33813
23 36725
24 41028
25 42444
26 44733
27 45630
28 45985
29 50085
30 57768
31 69936
32 81639
33 86420
34 87116
35 92667
36 95418
37 96348
38 97185
39 114100

List of values

[7, 18, 187, 378, 1560, 1683, 1710, 1719, 4697, 7788, 8832, 10693, 21708, 22968, 27378, 28322, 29032, 30016, 30635, 32220, 32368, 33813, 36725, 41028, 42444, 44733, 45630, 45985, 50085, 57768, 69936, 81639, 86420, 87116, 92667, 95418, 96348, 97185, 114100]

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

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