A100555 Smallest square that is equal to the sum of n not-necessarily-distinct primes plus 1.

1, 4, 9, 9, 9, 16, 16, 16, 25, 25, 25, 25, 25, 36, 36, 36, 36, 36, 49, 49, 49, 49, 49, 49, 49, 64, 64, 64, 64, 64, 64, 64, 81, 81, 81, 81, 81, 81, 81, 81, 81, 100, 100, 100, 100, 100, 100, 100, 100, 100, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 144, 144

Offset: 0

Author

Giovanni Teofilatto, Dec 31 2004

Keywords

• nonn

Examples

			a(1)=4 because 2^2=1+3.
a(2)=9 because 3^2=1+3+5.
a(3)=9 because 3^2=1+2+3+3.
a(4)=9 because 3^2=1+2+2+2+2.
		

Crossrefs

Cf. A100498, A101776-A101778.

Extensions

Corrected and extended by Ray Chandler, Jan 10 2005