# A198256 (b-file synthesized from sequence entry) 0 1 1 5 2 46 3 485 4 5626 5 69062 6 882540 7 11614437 8 156343330 9 2142556130 10 29791689148 11 419260001030 12 5960334608788 13 85469709312860 14 1234797737654296 15 17955907741675749 16 262607675818816050 17 3860239468267647914 18 57002176852356800700 19 845159480056345448610