OFFSET
1,1
FORMULA
a(n) = A000073(floor((n+1)/2)-3) * 2^(floor(n/2)).
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
FUNG Cheok Yin, Mar 27 2007
EXTENSIONS
Offset corrected by Joerg Arndt, Mar 03 2017
STATUS
approved