# A334721 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 3 5 12 6 10 7 60 8 105 9 280 10 252 11 2520 12 2310 13 27720 14 25740 15 24024 16 9009 17 144144 18 136136 19 2450448 20 11639628 21 11085360 22 10581480 23 232792560 24 223092870 25 1070845776 26 1029659400 27 2974571600 28 2868336900 29 11473347600 30 11090902680 31 332727080400 32 644658718275 33 625123605600