# A076029 (b-file synthesized from sequence entry) 1 1 2 16 3 144 4 44100 5 18404100 6 1835265600 7 16304474894400 8 5421097109610000 9 296757450928652313600 10 178616855049415417958400 11 1411446839588456089779360000 12 638977904981699070278114213990400