OFFSET
1,1
COMMENTS
Records in A227533.
PROG
(PARI) r=0; forstep(n=2, 1e5, 2, t=1; while(!istotient(n^t++), ); if(t>r, r=t; print1(t", ")))
\\ See also A227533 for a more efficient method of computing terms.
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
Charles R Greathouse IV, Jul 14 2013
EXTENSIONS
a(14) from Charles R Greathouse IV, Jul 16 2013
a(15) from Charles R Greathouse IV, Jul 17 2013
a(16)-a(17) from Charles R Greathouse IV, Jul 19 2013
STATUS
approved