1,2

If n is a cube a(n)=A100196(n), otherwise a(n)=A100196(n)+1. Also, a(n)=(A070923(n)+n^2)^(1/3).

Table of n, a(n) for n=1..78.

a(n)=ceiling(n^(2/3)), n=1,2,...

Table[Ceiling[n^(2/3)], {n, 1, 100}]

Cf. A070923, A100196.

Sequence in context: A202304 A047745 A196176 * A285761 A080405 A039728

Adjacent sequences: A121533 A121534 A121535 * A121537 A121538 A121539

nonn

Zak Seidov, Aug 05 2006

approved