A099661 a(n) is the least prime following A002281[n] repdigits.

2, 11, 79, 787, 7789, 77783, 777781, 7777801, 77777803, 777777799, 7777777781, 77777777827, 777777777841, 7777777777859, 77777777777837, 777777777777787, 7777777777777867, 77777777777777797, 777777777777777817

Offset

0,1

Links

Table of n, a(n) for n=0..18.

Example

n=6: 77 is followed by 79.

Mathematica

Table[Table[NextPrime[7*(10^n-1)/9], {n, 0, 35}]
NextPrime/@LinearRecurrence[{11, -10}, {0, 7}, 35] (* Harvey P. Dale, Dec 12 2021 *)

Crossrefs

Cf. A003618, A003617, A096497, A096498, A068104, A002275-A002283, A099656-A099668.

Sequence in context: A163203 A142722 A320095 * A027110 A341955 A118969

Adjacent sequences: A099658 A099659 A099660 * A099662 A099663 A099664

Keyword

base,nonn

Author

Labos Elemer, Nov 17 2004

Status

approved