OFFSET
1,1
COMMENTS
a(n)/2^n appears to be converging to 2.2886...
LINKS
N. J. A. Sloane, Table of n, a(n) for n = 1..48
FORMULA
For n>=1, a(2n+1) = 2*a(2n)+2, while a(2n) is a mystery.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Oct 23 2012
STATUS
approved