A318655 The 2-adic valuation of A318649, the numerators of "Dirichlet Square Root" of squares.

0, 1, 0, 1, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0

Offset: 1

Author

Antti Karttunen, Sep 01 2018

Keywords

• nonn

Comments

Probably also the 2-adic valuation of A318511.

Links

• Antti Karttunen, Table of n, a(n) for n = 1..65537

Crossrefs

Cf. A318511, A318649, A318651, A318652, A318654 (the positions of nonzero terms).

Programs

PARI

A318655(n) = valuation(A318649(n),2); \\ Needs also code from A318649.

Formula

a(n) = A007814(A318649(n)).

It seems that for all n >= 1, a(n) <= A007814(A064549(n)) <= A007814(A000290(n)).