Numbers m such that 5*T(m)-1 is a square, where T = A000217.
A233474
Numbers m such that 5*T(m)-1 is a square, where T = A000217.
Terms
- a(0) =1a(1) =4a(2) =52a(3) =169a(4) =1993a(5) =6436a(6) =75700a(7) =244417a(8) =2874625a(9) =9281428a(10) =109160068a(11) =352449865a(12) =4145207977a(13) =13383813460a(14) =157408743076a(15) =508232461633
External references
- oeis: A233474