# A239098 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 0 4 1 5 3 6 0 7 2 8 10 9 15 10 0 11 6 12 40 13 105 14 105 15 0 16 24 17 196 18 700 19 1260 20 945 21 0 22 120 23 1148 24 5068 25 12600 26 17325 27 10395 28 0 29 720 30 7848 31 40740 32 126280 33 242550 34 270270 35 135135 36 0 37 5040 38 61416 39 363660 40 1332100 41 3213210 42 5045040 43 4729725 44 2027025 45 0 46 40320 47 541728 48 3584856 49 15020720 50 43022980 51 85345260 52 113513400 53 91891800 54 34459425