Numbers k such that triangular(k)+1 is a square and triangular(k)+2 is a prime.
A226071
Numbers k such that triangular(k)+1 is a square and triangular(k)+2 is a prime.
Terms
- a(0) =0a(1) =2a(2) =5a(3) =189a(4) =3074a(5) =218685
External references
- oeis: A226071