# A193561 (b-file synthesized from sequence entry) 0 1 1 2 2 1 3 6 4 6 5 3 6 24 7 36 8 30 9 15 10 120 11 240 12 270 13 210 14 105 15 720 16 1800 17 2520 18 2520 19 1890 20 945 21 5040 22 15120 23 25200 24 30240 25 28350 26 20790 27 10395 28 40320 29 141120 30 272160 31 378000 32 415800 33 374220 34 270270 35 135135 36 362880 37 1451520 38 3175200 39 4989600