# A054972 (b-file synthesized from sequence entry) 1 4 2 30 3 300 4 3570 5 64680 6 1231230 7 29609580 8 746876130 9 22309287000 10 834590426670 11 32089678420800 12 1461885412557570 13 72411562719475980 14 3676255934199278430 15 201683848689025182480 16 12416469379809407042130