Indices of Belphegor primes: numbers k such that the decimal number 1 0...0(k 0's) 666 0...0(k 0's) 1 (i.e., A232449(k)) is prime.

A232448

Indices of Belphegor primes: numbers k such that the decimal number 1 0...0(k 0's) 666 0...0(k 0's) 1 (i.e., A232449(k)) is prime.

Terms

    a(0) =0a(1) =13a(2) =42a(3) =506a(4) =608a(5) =2472a(6) =2623a(7) =28291a(8) =181298

External references