Indices of primes in sequence defined by A(0) = 21, A(n) = 10*A(n-1) + 41 for n > 0.
A101961
Indices of primes in sequence defined by A(0) = 21, A(n) = 10*A(n-1) + 41 for n > 0.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =5a(4) =11a(5) =185a(6) =434a(7) =1745a(8) =3446a(9) =18797a(10) =70208
External references
- oeis: A101961