A132957 a(n) = sqrt(A132956(n)).

6, 7, 6, 31, 60, 13, 38, 10, 372, 107, 48, 95, 22, 245, 84, 189, 94, 293, 160, 83, 200, 31, 34, 241, 84, 37, 180, 653, 246, 43, 86, 123, 278, 73, 140, 57, 198, 311, 180, 891, 704, 93, 558, 65, 1150, 233, 88, 429, 352, 329, 238, 485, 358, 307, 214, 163, 346, 709, 728

Offset: 2

Author

Enoch Haga, Sep 06 2007

Keywords

• easy
• nonn

Examples

			a(2)= sqrt(36)=6. a(3)=sqrt(49)=7.
		

Links

• Zak Seidov, Table of n, a(n) for n = 2..1001

Crossrefs

Cf. A132955, A132956.

Programs

PARI

a(n) = {ip = 1; while (! issquare(v=sum(i=ip, ip+n-1, prime(i))), ip++); sqrtint(v);} \\ Michel Marcus, Jun 08 2014

Extensions

Definition simplified, offset set to 2 by R. J. Mathar, Oct 30 2009