A065543 a(n) is smallest prime > 11*a(n-1), a(1) = 11.

11, 127, 1399, 15391, 169307, 1862381, 20486203, 225348257, 2478830833, 27267139177, 299938530953, 3299323840567, 36292562246243, 399218184708683, 4391400031795559, 48305400349751191, 531359403847263197, 5844953442319895203, 64294487865518847337, 707239366520707320847

Offset

1,1

Links

Bruce Nye, Table of n, a(n) for n = 1..500

Mathematica

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

Prog

(PARI) lista(nn) = {my(va=vector(nn)); va[1]=11; for(n=2, nn, va[n]=nextprime(11*va[n-1])); va; } \\ Bruce Nye, Apr 15 2026

Crossrefs

Cf. A065540, A065541, A065542, A065544.

Sequence in context: A392041 A053546 A084975 * A015598 A395668 A363111

Adjacent sequences: A065540 A065541 A065542 * A065544 A065545 A065546

Keyword

nonn

Author

Robert G. Wilson v, Nov 28 2001

Extensions

More terms from Bruce Nye, Apr 15 2026

Status

approved