# A001760 (b-file synthesized from sequence entry) 1 2 2 60 3 836 4 9576 5 103326 6 1106820 7 12062152 8 135391872 9 1575253690 10 19058801580 11 240134763948 12 3152151344088 13 43098592576694 14 613444153400340 15 9082400109162224 16 139747529003597424 17 2232451845925297938