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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.

A231120 Primes q of the form q = p^2 + 4 (p prime) such that r = q^2 + 4 and t = r^2 + 4 are also prime.

Table of values

n a(n)
1 25877573
2 124835933
3 277455653
4 2210598293
5 2970577013
6 34314969053
7 43115615453
8 90247970573
9 93738231893
10 116836126973
11 153183783773
12 720880808213
13 1818659924933
14 2068485397733
15 2258777543933
16 3449960763653
17 3645300477293
18 4501767897173
19 4670625512573
20 5238481845533
21 6812794277693

List of values

[25877573, 124835933, 277455653, 2210598293, 2970577013, 34314969053, 43115615453, 90247970573, 93738231893, 116836126973, 153183783773, 720880808213, 1818659924933, 2068485397733, 2258777543933, 3449960763653, 3645300477293, 4501767897173, 4670625512573, 5238481845533, 6812794277693]

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

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