Numbers k such that k^2+1 is a triangular number and k^2+2 is a prime number.
A226074
Numbers k such that k^2+1 is a triangular number and k^2+2 is a prime number.
Terms
- a(0) =0a(1) =3a(2) =105a(3) =4116315
External references
- oeis: A226074
A226074
Numbers k such that k^2+1 is a triangular number and k^2+2 is a prime number.