# A260687 (b-file synthesized from sequence entry) 1 1 2 2 3 2 4 6 5 15 6 9 7 24 8 104 9 144 10 64 11 120 12 770 13 1775 14 1750 15 625 16 720 17 6264 18 20880 19 33480 20 25920 21 7776 22 5040 23 56196 24 250096 25 571095 26 708295 27 453789 28 117649 29 40320 30 554112 31 3127040 32 9433088 33 16486400 34 16744448 35 9175040 36 2097152 37 362880 38 5973264 39 41229324 40 156498804