# A322255 (b-file synthesized from sequence entry) 2 2 3 6 4 24 5 2 6 120 7 14 8 720 9 90 10 2 11 5040 12 646 13 32 14 40320 15 5242 16 368 17 2 18 362880 19 47622 20 3984 21 72 22 3628800 23 479306 24 44304 25 1496 26 2 27 39916800 28 5296790 29 521606 30 25384 31 160 32 479001600 33 63779034 34 6564318 35 399848 36 6056 37 2 38 6227020800 39 831283558 40 88422296 41 6231544 42 161136 43 352