Numbers k such that k+1 and 3*k+1 are perfect squares.
A045899
Numbers k such that k+1 and 3*k+1 are perfect squares.
Terms
- a(0) =0a(1) =8a(2) =120a(3) =1680a(4) =23408a(5) =326040a(6) =4541160a(7) =63250208a(8) =880961760a(9) =12270214440a(10) =170902040408
External references
- oeis: A045899