1,2

(PARI) for(n=1, 10^8, x=(5*n*(n-1)+1); if(issquare(x), print(x)))

Sequence in context: A137607 A112078 A145121 this_sequence A048289 A013765 A013891

Adjacent sequences: A062785 A062786 A062787 this_sequence A062789 A062790 A062791

nonn

Jason Earls (zevi_35711(AT)yahoo.com), Jul 19 2001