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0,2
Table of n, a(n) for n=0..65.
a(n) = A001477(n) + A048761(n+1)
a(4)= 13 = 4+9 because 9 is the least square > 4.
(PARI) A165776(n)=n+(sqrtint(n)+1)^2
Cf. A165775.
Sequence in context: A247522 A011761 A106745 * A003273 A006991 A047574
Adjacent sequences: A165773 A165774 A165775 * A165777 A165778 A165779
easy,nonn
M. F. Hasler, Oct 05 2009
approved