a(n) is the smallest nonnegative integer k where exactly n pairs of positive integers (x, y) exist such that x^2 + 3*y^2 = k.
A374158
a(n) is the smallest nonnegative integer k where exactly n pairs of positive integers (x, y) exist such that x^2 + 3*y^2 = k.
Terms
- a(0) =0a(1) =4a(2) =91a(3) =28a(4) =196a(5) =31213a(6) =364a(7) =9604a(8) =53599a(9) =2548a(10) =470596
External references
- oeis: A374158