1 3 4 9 10 12 13 27 28 30 31 36 37 39 40 ?

1 3 4 9 10 12 13 27 28 30 31 36 37 39 40 ... Positive integers in binary, treated as a base 3 number and converted to decimal.

lib/DbaDatabase.php:134: Warning: dba_replace() [<a href='function.dba-replace'>function.dba-replace</a>]: You cannot perform a modification to a database without proper access