A126035 a(n) is the largest prime < 7*a(n-1) for n > 1, with a(1) = 2.

2, 13, 89, 619, 4327, 30271, 211891, 1483231, 10382599, 72678187, 508747279, 3561230947, 24928616591, 174500315999, 1221502211987, 8550515483903, 59853608387317, 418975258711193, 2932826810978261, 20529787676847809, 143708513737934633, 1005959596165542401, 7041717173158796783

Offset: 1

Author

Artur Jasinski, Dec 16 2006

Keywords

• nonn

Links

• Artur Jasinski, Table of n, a(n) for n = 1..40

Crossrefs

Cf. A126031.

Programs

Mathematica

NestList[NextPrime[7#,-1]&,2,20] (* Harvey P. Dale, Jul 01 2017 *)