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A085266
Numbers having a unique representation as sum of a squarefree number and a square.
2
2, 3, 4, 5, 8, 9, 25, 29, 61
OFFSET
1,1
COMMENTS
A085263(a(n))=1; are there more?
No more terms through 625000000. - Ryan Propper, Jan 05 2008
LINKS
Eric Weisstein's World of Mathematics, Square Numbers.
Eric Weisstein's World of Mathematics, Squarefree
CROSSREFS
Sequence in context: A295033 A152606 A057911 * A280431 A056804 A305399
KEYWORD
nonn,more,hard
AUTHOR
Reinhard Zumkeller, Jun 23 2003
STATUS
approved