# A206141 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 8 4 26 5 67 6 216 7 555 8 1704 9 4538 10 13320 11 35376 12 103863 13 273792 14 783694 15 2101835 16 5905044 17 15745360 18 44132278 19 117267422 20 325136638 21 868034994 22 2379074541 23 6337238658 24 17347580484 25 46039358056 26 125056019725 27 332678989816 28 898361151760 29 2382959919616