# A066793 (b-file synthesized from sequence entry) 1 1 2 9 3 14 4 33 5 54 6 140 7 213 8 1934 9 35811 10 38405 11 200938 12 389409 13 1792209 14 5606457 15 8405437 16 68780189 17 880346227 18 85910903650 19 87635944146 20 284340107954 21 2195312273836 22 2864568747364 23 3155591650029