Numbers k such that b(k) is prime, where b(1) = prime(1) = 2, b(n) = 10*b(n-1) + (prime(n) mod 10).
A276481
Numbers k such that b(k) is prime, where b(1) = prime(1) = 2, b(n) = 10*b(n-1) + (prime(n) mod 10).
Terms
- a(0) =1a(1) =2a(2) =4a(3) =13a(4) =16a(5) =17a(6) =28a(7) =34a(8) =90a(9) =100a(10) =132a(11) =331a(12) =534a(13) =7923a(14) =10157a(15) =40197
External references
- oeis: A276481