# A061772 (b-file synthesized from sequence entry) 1 10 2 45 3 300 4 2250 5 18000 6 150000 7 1285714 8 11250000 9 100000000 10 900000000 11 8181818181 12 75000000000 13 692307692307 14 6428571428572 15 60000000000000 16 562500000000000 17 5294117647058823 18 50000000000000000 19 473684210526315789 20 4500000000000000000 21 42857142857142857143