# A103880 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 1 5 1 6 6 7 4 8 1 9 1 10 24 11 36 12 8 13 1 14 1 15 120 16 288 17 216 18 16 19 1 20 1 21 720 22 7200 23 3456 24 1296 25 32 26 1 27 1 28 5040 29 14400 30 432000 31 41472 32 7776 33 64 34 1 35 1 36 40320 37 235200 38 2592000 39 25920000 40 497664 41 46656 42 128 43 1 44 1 45 362880 46 11289600 47 889056000 48 51840000