OFFSET
1,2
COMMENTS
PROG
(PARI) {s=1; p=0; for( n=1, 23, until( !bitand( s, s>>(p^2) ), p++); s+=s<<(p^2); print1( p, ", "))}
CROSSREFS
KEYWORD
nonn
AUTHOR
M. F. Hasler, Apr 09 2008
EXTENSIONS
a(24)-a(30) from Donovan Johnson, Oct 03 2009
STATUS
approved