# A196776 (b-file synthesized from sequence entry) 1 1 2 0 3 2 4 1 5 0 6 6 7 0 8 8 9 0 10 24 11 1 12 0 13 60 14 0 15 120 16 0 17 32 18 0 19 480 20 0 21 720 22 1 23 0 24 546 25 0 26 4200 27 0 28 5040 29 0 30 128 31 0 32 8064 33 0 34 40320 35 0 36 40320 37 1 38 0 39 4920 40 0 41 115920 42 0 43 423360 44 0 45 362880 46 0 47 512 48 0 49 130560 50 0 51 1693440 52 0 53 4838400 54 0 55 3628800