# A030539 (b-file synthesized from sequence entry) 0 1 1 3 2 15 3 135 4 2244 5 63954 6 2649790 7 135954390 8 7791419142 9 471957819750 10 29387888461350 11 1855241125539750 12 117925810919637670 13 7521488030252902566 14 480553086854453064870 15 30729125540385201818790 16 1965823916539674220608678