A099656 a(n) is the least prime following A002276(n) repdigits.

2, 3, 23, 223, 2237, 22229, 222247, 2222239, 22222223, 222222227, 2222222243, 22222222223, 222222222301, 2222222222243, 22222222222229, 222222222222227, 2222222222222281, 22222222222222301, 222222222222222281

Offset

0,1

Links

Robert Israel, Table of n, a(n) for n = 0..999

Example

n=2: 22 is followed by 23.

Maple

seq(nextprime(2*(10^i-1)/9), i=0..20); # Robert Israel, Aug 25 2017

Mathematica

Table[Table[NextPrime[2*(10^n-1)/9], {n, 0, 35}]
Table[ NextPrime[2*(10^n - 1)/9], {n, 0, 18}] (* Robert G. Wilson v, Nov 20 2004 *)
Table[NextPrime[FromDigits[PadRight[{}, n, 2]]], {n, 0, 20}] (* Harvey P. Dale, Dec 15 2021 *)

Crossrefs

Cf. A003618, A003617, A096497, A096498, A068104, A002275-A002283.

Sequence in context: A260125 A020458 A139067 * A157733 A235934 A064888

Adjacent sequences: A099653 A099654 A099655 * A099657 A099658 A099659

Keyword

base,nonn

Author

Labos Elemer, Nov 17 2004

Status

approved