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Table of n, a(n) for n=1..66.
5 is in the sequence because 5 can be written as 3^2-2^2
Sequence in context: A160519 A241480 A211656 * A278181 A232566 A192649
Adjacent sequences: A051201 A051202 A051203 * A051205 A051206 A051207
David W. Wilson
Corrected by Henry Bottomley, Jul 24 2000