0,6

Analogous to A065855.

Table of n, a(n) for n=0..73.

A. Karttunen, Scheme-program for computing this sequence.

Index entries for sequences operating on GF(2)[X]-polynomials

In range [0,8] there are the following four reducible polynomials: 4,5,6,8 thus a(8) = 4.

(PARI) first(n)=my(s); concat([0, 0], vector(n-1, k, s += !polisirreducible(Pol(binary(k+1))*Mod(1, 2)))) \\ Charles R Greathouse IV, Sep 02 2015

Partial sums of A091247. Cf. A091242.

Sequence in context: A132351 A025556 A005229 * A100618 A248227 A061288

Adjacent sequences: A091242 A091243 A091244 * A091246 A091247 A091248

nonn

Antti Karttunen, Jan 03 2004

approved