# A157400 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 1 5 6 6 6 7 1 8 24 9 24 10 24 11 1 12 80 13 180 14 120 15 120 16 1 17 330 18 1200 19 1080 20 720 21 720 22 1 23 1302 24 7770 25 10920 26 7560 27 5040 28 5040 29 1 30 5936 31 57456 32 102480 33 87360 34 60480 35 40320 36 40320 37 1 38 26784 39 438984 40 970704 41 1103760 42 786240 43 544320 44 362880 45 362880