# A105725 (b-file synthesized from sequence entry) 1 1 2 2 3 6 4 6 5 24 6 60 7 24 8 120 9 360 10 840 11 120 12 720 13 2520 14 6720 15 15120 16 720 17 5040 18 20160 19 60480 20 151200 21 332640 22 5040 23 40320 24 181440 25 604800 26 1663200 27 3991680 28 8648640 29 40320 30 362880 31 1814400 32 6652800 33 19958400 34 51891840 35 121080960 36 259459200