OFFSET
1,2
PROG
(PARI) an=0; for( i=1, 10^7, an=bitxor(an, i^2); an & an==1<<valuation(an, 2) & print1(valuation(an, 2)", "))
CROSSREFS
KEYWORD
more,nonn
AUTHOR
M. F. Hasler, Oct 20 2008
STATUS
approved