0,4

Every negabinary numbral appears infinitely often (since every signed integer can be represented as a sum of two signed integers in infinitely many ways).

Table of n, a(n) for n=0..85.

A. Frosini and S. Rinaldi, On the Sequence A079500 and Its Combinatorial Interpretations, J. Integer Seq., Vol. 9 (2006), Article 06.3.1.

a(4)=6 since a(4) corresponds to the table entry for [1]+[1]=1+1=2=4-2=[6].

Cf. A005351, A005352, A057893, A057894.

Sequence in context: A320575 A110218 A316259 * A334188 A265993 A115009

Adjacent sequences: A057889 A057890 A057891 * A057893 A057894 A057895

easy,nonn,tabl

Marc LeBrun, Sep 25 2000

approved