A071546 - OEIS

%I #6 Mar 30 2012 18:39:00

%S 5,2,5,10,17,26,37,5,65,82,101,2,13,170,197,226,61,10,325,362,5,61,13,

%T 530,577,626,41,149,785,65,73,17,149,146,1157,1226,41,74,1445,1522,

%U 1601,317,397,373,1937,221,97,74,2305,26,2501,130,493,2810,5,3026,29

%N Smallest integer > 1 of the form (k^2+1)/(n^2+1).

%F a(n)=(A065876(n)^2+1)/(n^2+1)

%o (PARI) for(n=1,70,s=n+1; while((s^2+1)%(n^2+1)>0,s++); print1((s^2+1)/(n^2+1),","))

%Y Cf. A065876.

%K easy,nonn

%O 1,1

%A _Benoit Cloitre_, May 30 2002