# A357297 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 6 4 1 5 1 6 90 7 20 8 2 9 1 10 2520 11 1680 12 280 13 6 14 1 15 113400 16 369600 17 277200 18 9072 19 24 20 1 21 7484400 22 168168000 23 1009008000 24 163459296 25 532224 26 120 27 1 28 681080400 29 137225088000 30 9777287520000 31 15205637551104 32 237124952064 33 49420800 34 720 35 1 36 81729648000 37 182509367040000 38 207786914375040000 39 4847253138540933120 40 765985681152147456 41 689598074880000 42 6671808000 43 5040 44 1