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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A085263(a(n))=1; are there more?

No more terms through 625000000. - Ryan Propper, Jan 05 2008

LINKS

Table of n, a(n) for n=1..9.

Eric Weisstein's World of Mathematics, Square Numbers.

Eric Weisstein's World of Mathematics, Squarefree

CROSSREFS

Cf. A085265, A085267.

Sequence in context: A295033 A152606 A057911 * A280431 A056804 A305399

Adjacent sequences:  A085263 A085264 A085265 * A085267 A085268 A085269

KEYWORD

nonn,more,hard

AUTHOR

Reinhard Zumkeller, Jun 23 2003

STATUS

approved

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Last modified August 4 12:32 EDT 2021. Contains 346447 sequences. (Running on oeis4.)