# A151300 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 28 4 118 5 469 6 2039 7 8559 8 37909 9 164062 10 735698 11 3246436 12 14688132 13 65690534 14 299227510 15 1351439955 16 6188946223 17 28161550486 18 129528141204 19 592866204918 20 2736746791312 21 12585998174974 22 58276845530802 23 269058921980442 24 1249107763866352 25 5785962784369466 26 26923056650212598 27 125058263384130622