A126035 a(n) is largest prime < 7*a(n-1).

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

Offset

1,1

Links

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

Mathematica

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

Crossrefs

Cf. A006902, A040016, A120031-A120040.

Sequence in context: A106937 A033891 A172968 * A074617 A337169 A367785

Adjacent sequences: A126032 A126033 A126034 * A126036 A126037 A126038

Keyword

nonn

Author

Artur Jasinski, Dec 16 2006

Status

approved