# A099810 (b-file synthesized from sequence entry) 1 1 2 3 3 7 4 13 5 25 6 63 7 103 8 193 9 489 10 835 11 1647 12 4061 13 6545 14 12543 15 31343 16 53505 17 105073 18 258307 19 424567 20 790797 21 2005641 22 3420447 23 6748855 24 16634209 25 26811769 26 51377059 27 128377535 28 219165917 29 430383937 30 1058044767 31 1739056639