# A113133 (b-file synthesized from sequence entry) 0 1 1 1 2 6 3 72 4 1332 5 33264 6 1040256 7 38926656 8 1692061488 9 83688313536 10 4638320578944 11 284692939944192 12 19169186341398912 13 1404935464314299904 14 111348880778746460160 15 9489756817594314049536 16 865470841829802331976448