A291859 Prime numbers of the form 7^k - 12.

37, 331, 2389, 13841287189, 65712362363534280139531, 459986536544739960976789, 54116956037952111668959660837, 2651730845859653471779023381589

Offset

1,1

Links

Robert Price, Table of n, a(n) for n = 1..10

F. Firoozbakht, M. F. Hasler, Variations on Euclid's formula for Perfect Numbers, JIS 13 (2010) #10.3.1.

Henri & Renaud Lifchitz, PRP Records

OpenPFGW Project, Primality Tester

Mathematica

Select[Table[7^k - 12], {k, 2, 100}], PrimeQ[#] &]

Crossrefs

Cf. A236371.

Sequence in context: A130450 A271184 A217117 * A133554 A177513 A137834

Adjacent sequences: A291856 A291857 A291858 * A291860 A291861 A291862

Keyword

nonn

Author

Robert Price, Sep 04 2017

Status

approved