Nonnegative integers m such that 18*m*(m+1)+1 is a square.
A222393
Nonnegative integers m such that 18*m*(m+1)+1 is a square.
Terms
- a(0) =0a(1) =4a(2) =12a(3) =152a(4) =424a(5) =5180a(6) =14420a(7) =175984a(8) =489872a(9) =5978292a(10) =16641244a(11) =203085960a(12) =565312440a(13) =6898944364a(14) =19203981732a(15) =234361022432a(16) =652370066464
External references
- oeis: A222393