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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.

A291991 Primes of the form Phi(k, -9), where Phi is the cyclotomic polynomial.

Table of values

n a(n)
1 73
2 530713
3 6481
4 47763361
5 42521761
6 150094634909578633
7 13490012358249728401
8 282429005041
9 19966781110160346782368664772328944885905284750420567849
10 1076050302914923449767311155851656076154481

List of values

[73, 530713, 6481, 47763361, 42521761, 150094634909578633, 13490012358249728401, 282429005041, 19966781110160346782368664772328944885905284750420567849, 1076050302914923449767311155851656076154481]

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

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