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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.

A211875 Primes of the form Phi(phi(k),3), the phi(k)-th Cyclotomic polynomial evaluated at 3, where phi is the Euler totient function.

Table of values

n a(n)
1 2
2 7
3 61
4 73
5 6481
6 530713
7 42521761
8 47763361
9 23535794707
10 282429005041
11 374857981681
12 150094634909578633
13 13490012358249728401
14 105919308797935444986721
15 1076050302914923449767311155851656076154481

List of values

[2, 7, 61, 73, 6481, 530713, 42521761, 47763361, 23535794707, 282429005041, 374857981681, 150094634909578633, 13490012358249728401, 105919308797935444986721, 1076050302914923449767311155851656076154481]

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

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