OFFSET
1,1
LINKS
Lukasz Merta, Composition inverses of the variations of the Baum-Sweet sequence, arXiv:1803.00292 [math.NT], 2018. See h(n) p. 23.
PROG
(PARI) bs(n)=if(n<3, n<2, if(n%2, bs(n\2), n%4==0&&bs(n/4))); \\ A086747
isok(n) = bs(n) == 0;
CROSSREFS
KEYWORD
nonn
AUTHOR
Michel Marcus, Oct 20 2018
STATUS
approved