1,1

For x values see A200656.

For y values see A200657.

Definition: Secondary terms occured when existed such integer k that A200656 is divisible by k^2 and A200657 is divisible by k^3 and A200658 is divisible by k^6.

Terms free of such k are primary terms.

Secondary terms are: a(6)=a(2)*2^6, a(7)=a(3)*2^6.

A200218 is subset of this sequence.

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

Cf. A200218, A200656, A200657.

Sequence in context: A235237 A237138 A201268 * A303266 A185530 A057851

Adjacent sequences: A200655 A200656 A200657 * A200659 A200660 A200661

sign

Artur Jasinski, Nov 20 2011

approved