Primes whose base-b representation is the concatenation of the base-b representations of (1, 2, ..., k, k-1, ..., 1), for some b > 1 and some k > 1.

A260871

Primes whose base-b representation is the concatenation of the base-b representations of (1, 2, ..., k, k-1, ..., 1), for some b > 1 and some k > 1.

Terms

    a(0) =13a(1) =439a(2) =7069a(3) =27961a(4) =2864599a(5) =522134761

External references