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.

A065116 Numbers k such that sigma(k) + tau(k) and sigma(k) - tau(k) are primes.

Table of values

n a(n)
1 8
2 162
3 512
4 32768
5 41472
6 3748322
7 5120000
8 6837602
9 8000000
10 35701250
11 75031250
12 78125000
13 91125000
14 907039232
15 10660336128
16 11911961250
17 21234895362
18 41265473762
19 55965865922
20 209642370242
21 835707290112
22 1148179179938
23 1821331173888
24 2097152000000

List of values

[8, 162, 512, 32768, 41472, 3748322, 5120000, 6837602, 8000000, 35701250, 75031250, 78125000, 91125000, 907039232, 10660336128, 11911961250, 21234895362, 41265473762, 55965865922, 209642370242, 835707290112, 1148179179938, 1821331173888, 2097152000000]

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

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