OFFSET
0,1
LINKS
Gary Doran, Table of n, a(n) for n = 0..100
EXAMPLE
a(0) = 2 because 00 has two rotational symmetries; a(21) = 3 because 010101 has 3 rotational symmetries.
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Max Sills, Apr 03 2008
STATUS
approved