Numbers k such that (k+1)*(2*k+1) is a perfect square.
A078522
Numbers k such that (k+1)*(2*k+1) is a perfect square.
Terms
- a(0) =0a(1) =24a(2) =840a(3) =28560a(4) =970224a(5) =32959080a(6) =1119638520a(7) =38034750624
External references
- oeis: A078522