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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.

A291687 Primes of the form k!4+4, where k!4 is the quadruple factorial number (A007662).

Table of values

n a(n)
1 5
2 7
3 3469
4 9949
5 65839
6 1514209
7 5221129
8 40883539
9 151412629
10 44358635479
11 16713607661375629
12 36453104912477522894629
13 1027438963906784290227656915629
14 7419136758370889359733910587728129
15 4551830726072842264843919206776501006328129

List of values

[5, 7, 3469, 9949, 65839, 1514209, 5221129, 40883539, 151412629, 44358635479, 16713607661375629, 36453104912477522894629, 1027438963906784290227656915629, 7419136758370889359733910587728129, 4551830726072842264843919206776501006328129]

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

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