OFFSET
1,5
COMMENTS
Same as the number of binary Lyndon words of length n with trace 0 and subtrace 1 over GF(2).
LINKS
FORMULA
EXAMPLE
a(5;0,1)=2 since the two binary Lyndon words of trace 0, subtrace 1 and length 5 are { 00011, 00101 }.
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Frank Ruskey and Nate Kube, Aug 21 2002
EXTENSIONS
Terms a(33) onward from Max Alekseyev, Apr 09 2013
STATUS
approved