# A227474 (b-file synthesized from sequence entry) 0 1 1 1 2 9 3 27 4 189 5 729 6 24057 7 104247 8 938223 9 4349943 10 82648917 11 400529367 12 3948075189 13 19740375945 14 1598970451545 15 8182966428495 16 84557319761115