a(1) = 4, a(n) = smallest number > a(n-1) such that the concatenation of a(n-1) and a(n) is a square.
A265148
a(1) = 4, a(n) = smallest number > a(n-1) such that the concatenation of a(n-1) and a(n) is a square.
Terms
- a(0) =4a(1) =9a(2) =61a(3) =504a(4) =4516a(5) =47504a(6) =382025a(7) =3975209a(8) =33057329a(9) =80214016a(10) =454665681a(11) =4507966404a(12) =44168848384a(13) =69005350809a(14) =163894140625a(15) =784386132324
External references
- oeis: A265148