# A174636 (b-file synthesized from sequence entry) 0 1 1 9 2 1046 3 519918 4 681617304 5 1853340127320 6 9049964145536880 7 72083636411763075120 8 874164613833481641471360 9 15325066482283901592487889280 10 372998446683217113984893861356800