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A065539
a(n) is smallest prime > 10*a(n-1), a(1) = 13.
0
13, 131, 1319, 13217, 132173, 1321753, 13217531, 132175313, 1321753177, 13217531771, 132175317727, 1321753177271, 13217531772769, 132175317727727, 1321753177277287, 13217531772772933, 132175317727729369
OFFSET
1,1
MATHEMATICA
NextPrim[n_Integer] := Block[ {k = n + 1}, While[ !PrimeQ[k], k++ ]; Return[k]]; a[1] = 13; a[n_] := NextPrim[ 10*a[n - 1]]; Table[ a[n], {n, 1, 20} ]
CROSSREFS
Cf. A065122.
Sequence in context: A142740 A248919 A037582 * A048554 A293580 A295349
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, Nov 28 2001
STATUS
approved