OFFSET
1,1
EXAMPLE
a(1)=2749 since p=2749 is the least prime of the form 4k+1 for which sp-(floor(sqrt(sp)))^2 is not a square for s=1..12, but 13p-(floor(sqrt(13p)))^2 is a square (for p=2749 it is 16).
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladimir Shevelev, Sep 30 2008
STATUS
approved