OFFSET
0,4
COMMENTS
A number m is a child of n if the binary representation of n has a 1 in every position where the binary representation of m has a 1.
LINKS
Nadia Heninger and N. J. A. Sloane, Table of n, a(n) for n = 0..3000
N. J. A. Sloane, Fortran program for this and related sequences
PROG
(Fortran) See Sloane link.
CROSSREFS
KEYWORD
nonn
AUTHOR
Nadia Heninger and N. J. A. Sloane, Jun 06 2008
STATUS
approved