OFFSET
1,1
REFERENCES
Mark A. Herkommer, Number Theory, A Programmer's Guide, McGraw-Hill, New York, 1999, page 315.
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[ Range[287], (Mod[ #, 16] == 0 || Mod[ #, 16] == 1 || Mod[ #, 16] == 4 || Mod[ #, 16] == 9) && !IntegerQ[ Sqrt[ # ]] & ]
Select[Range[300], MemberQ[{0, 1, 4, 9}, Mod[#, 16]]&&!IntegerQ[Sqrt[#]]&] (* Harvey P. Dale, Jul 29 2019 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Robert G. Wilson v, Mar 26 2003
STATUS
approved