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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.

A124987 Primes of the form 12k+5 generated recursively. Initial prime is 5. General term is a(n) = Min {p is prime; p divides 4+Q^2; p == 5 (mod 12)}, where Q is the product of previous terms in the sequence.

Table of values

n a(n)
1 5
2 29
3 17
4 6076229
5 1289
6 78067083126343039013
7 521
8 8606045503613
9 15837917
10 1873731749
11 809
12 137
13 2237
14 17729

List of values

[5, 29, 17, 6076229, 1289, 78067083126343039013, 521, 8606045503613, 15837917, 1873731749, 809, 137, 2237, 17729]

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

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