Numbers k such that 2*k+1 and 3*k+1 are both triangular numbers.
A274603
Numbers k such that 2*k+1 and 3*k+1 are both triangular numbers.
Terms
- a(0) =45a(1) =4455a(2) =436590a(3) =42781410a(4) =4192141635a(5) =410787098865
External references
- oeis: A274603