# A137394 (b-file synthesized from sequence entry) 1 1 2 2 3 4 4 6 5 12 6 12 7 24 8 64 9 48 10 32 11 120 12 320 13 400 14 160 15 80 16 720 17 2208 18 2400 19 1920 20 480 21 192 22 5040 23 15456 24 21952 25 13440 26 7840 27 1344 28 448 29 40320 30 135168 31 175616 32 157696 33 62720 34 28672 35 3584 36 1024 37 362880 38 1216512 39 1884672 40 1419264 41 919296 42 258048