# A253943 (b-file synthesized from sequence entry) 5 3 6 21 7 84 8 252 9 630 10 1386 11 2772 12 5148 13 9009 14 15015 15 24024 16 37128 17 55692 18 81396 19 116280 20 162792 21 223839 22 302841 23 403788 24 531300 25 690690 26 888030 27 1130220 28 1425060 29 1781325 30 2208843 31 2718576 32 3322704 33 4034712 34 4869480 35 5843376 36 6974352 37 8282043 38 9787869 39 11515140