A143989 Numbers having a unique representation as a sum of a prime and a square.

2, 4, 5, 8, 9, 13, 15, 16, 22, 24, 26, 31, 36, 37, 40, 46, 49, 50, 55, 61, 70, 74, 76, 81, 82, 94, 99, 100, 106, 115, 120, 127, 133, 136, 142, 144, 145, 154, 159, 166, 170, 178, 184, 202, 205, 219, 221, 225, 235, 246, 250, 253, 256, 265, 268, 274, 295, 298, 301, 310

Offset: 1

Author

Reinhard Zumkeller, Sep 07 2008

Keywords

• nonn

Comments

A002471(a(n)) = 1; subsequence of A014089.

Links

• R. Zumkeller, Table of n, a(n) for n = 1..256