# A303031 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 7 4 43 5 282 6 2708 7 31175 8 451701 9 7731154 10 154264825 11 3515514725 12 90381251065 13 2594105950453 14 82437061616923 15 2880328250160638 16 109987239823116870 17 4566153786442575091 18 205144850920195457266 19 9933105076082553631262 20 516439104253062357469829