OFFSET
1,2
EXAMPLE
As defined in A114483, s(4) = {1,0,1,0,1,1,0,1}; so a(4) = 8.
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Leroy Quet, Nov 30 2005
EXTENSIONS
Corrected and extended by Joshua Zucker, Jul 27 2006
STATUS
approved