OFFSET
0,1
COMMENTS
LINKS
Ralf Stephan, Some divide-and-conquer sequences ...
J. Wallgren, Hierarchical sequences
FORMULA
a(n) = 4 + 3*A007814(n). a(2n) = 4, a(2n+1) = a(n) + 3. - Ralf Stephan, Oct 09 2003
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Jonas Wallgren, Jan 19 2001
STATUS
approved