1,1

Upper and lower boundaries of the graph are almost exactly quadratic curves.

Zak Seidov, Table of n, a(n) for n = 1..10000

a(n) = A191475(n) + A191476(n).

a(10) = 5 because A033845(10) = 108 = 2^2 + 3^3 => A191475(10) = 2, A191476(10) = 3.

Cf. A033845, A191475, A191476.

Sequence in context: A061339 A073933 A056792 * A256544 A130500 A072073

Adjacent sequences: A227858 A227859 A227860 * A227862 A227863 A227864

nonn

Zak Seidov, Nov 01 2013

approved