A101771 Smallest k such that k^2 is equal to the sum of n distinct primes plus 1.

1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 16, 17, 18, 19, 20, 21, 24, 25, 26, 27, 30, 31, 32, 33, 36, 37, 38, 39, 42, 43, 44, 45, 48, 49, 50, 51, 54, 55, 56, 59, 60, 61, 62, 65, 66, 67, 70, 71, 72, 75, 76, 77, 80, 81, 82, 83, 86, 87, 88, 91, 92, 93, 96, 97, 98, 101, 102, 103, 106

Offset: 0

Author

Ray Chandler, Jan 10 2005

Keywords

• nonn

Crossrefs

Cf. A100498, A101772-A101775.

Formula

a(n) = Sqrt(A100498(n)).