A065538 a(n) is smallest prime > 10*a(n-1), a(1) = 11.

11, 113, 1151, 11519, 115201, 1152023, 11520269, 115202701, 1152027101, 11520271019, 115202710219, 1152027102209, 11520271022149, 115202710221517, 1152027102215173, 11520271022151733, 115202710221517367

Offset: 1

Author

Robert G. Wilson v, Nov 28 2001

Keywords

• nonn

Crossrefs

Cf. A065122.

Programs

Mathematica

NextPrim[n_Integer] := Block[ {k = n + 1}, While[ !PrimeQ[k], k++ ]; Return[k]]; a[1] = 11; a[n_] := NextPrim[ 10*a[n - 1]]; Table[ a[n], {n, 1, 20} ]