# A022163 (b-file synthesized from sequence entry) 0 1 1 5 2 6 3 27 4 33 5 147 6 180 7 801 8 981 9 4365 10 5346 11 23787 12 29133 13 129627 14 158760 15 706401 16 865161 17 3849525 18 4714686 19 20977947 20 25692633 21 114319107 22 140011740 23 622980801 24 762992541