# A245067 (b-file synthesized from sequence entry) 0 1 1 2 2 12 3 120 4 1610 5 25956 6 474012 7 9475752 8 202921290 9 4587734580 10 108376022040 11 2654745191280 12 67043341981980 13 1737717447946200 14 46062204663294000 15 1245096242017227360 16 34239776369652506970 17 956050033694583839220