# A028208 (b-file synthesized from sequence entry) 0 1 1 35 2 777 3 13999 4 223769 5 3314031 6 46600009 7 631601663 8 8333511417 9 107767060687 10 1372468494761 11 17273924107167 12 215413939302745 13 2666835630709103 14 32824988535796233 15 402159883923086911