A126039 a(n) is the largest prime < 11*a(n-1) for n > 1, with a(1) = 2.

2, 19, 199, 2179, 23957, 263521, 2898683, 31885507, 350740567, 3858146203, 42439608221, 466835690359, 5135192593939, 56487118533317, 621358303866457, 6834941342530991, 75184354767840859, 827027902446249409, 9097306926908743457, 100070376195996178013, 1100774138155957958123

Offset: 1

Author

Artur Jasinski, Dec 16 2006

Keywords

• nonn

Links

• Artur Jasinski, Table of n, a(n) for n = 1..30

Crossrefs

Cf. A126031.

Programs

Mathematica

NestList[NextPrime[11#,-1]&,2,20] (* Harvey P. Dale, May 31 2025 *)