# A143501 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 4 4 16 5 92 6 616 7 4729 8 40776 9 388057 10 4028230 11 45207583 12 544680014 13 7004865885 14 95694153485 15 1382946630490 16 21067128029388 17 337224872043659 18 5656357906530796 19 99168643108816180 20 1813250965008114981