# A281594 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 14 5 42 6 66 7 429 8 1430 9 4862 10 8398 11 58786 12 104006 13 74290 14 222870 15 3231615 16 11785890 17 129644790 18 47763870 19 1767263190 20 3282060210 21 12233133510 22 22870640910 23 22870640910 24 214984024554 25 115760628606 26 655976895434 27 34766775458002 28 65936987937590