Numbers k such that k^2 + 1 divides 2^k + 1.
A247220
Numbers k such that k^2 + 1 divides 2^k + 1.
Terms
- a(0) =0a(1) =2a(2) =4a(3) =386a(4) =20136a(5) =59140a(6) =373164544
External references
- oeis: A247220
A247220
Numbers k such that k^2 + 1 divides 2^k + 1.