a(1) = 1; a(n) = smallest number of the form k*a(n-1) +1 divisible by n^2.
A069020
a(1) = 1; a(n) = smallest number of the form k*a(n-1) +1 divisible by n^2.
Terms
- a(0) =1a(1) =4a(2) =9a(3) =64a(4) =1025a(5) =19476a(6) =331093a(7) =993280a(8) =73502721a(9) =1396551700a(10) =64241378201
External references
- oeis: A069020