# A146800 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 1 5 1 6 1 7 17 8 31 9 559 10 1013 11 8291 12 23145 13 356907 14 1013595 15 108749189 16 407493401 17 61299279691 18 281660353619 19 43848445982931 20 246087198399431 21 73605493456575165 22 501006153269757647