OFFSET
1,2
FORMULA
a(1) = 1; for n > 1, a(n) = 2*a(n-1) + (A137843(n-1) mod 2).
PROG
(Scheme) ;; Use the program given in A137843.
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Aug 31 2017
STATUS
approved