# A125141 (b-file synthesized from sequence entry) 1 2 2 3 3 4 4 5 5 6 6 12 7 20 8 30 9 72 10 165 11 288 12 693 13 1056 14 3024 15 9280 16 22500 17 42845 18 60480 19 240000 20 794580 21 1814400 22 7040040 23 26352000 24 98654400 25 321552000 26 1260230400 27 5311834416 28 17570520000 29 75087810000 30 325180275840 31 1526817600000