# A028155 (b-file synthesized from sequence entry) 0 1 1 31 2 611 3 9779 4 138747 5 1820595 6 22624267 7 270185443 8 3130828283 9 35437220819 10 393679085163 11 4307728419267 12 46553144477659 13 497913631860403 14 5279371826945099 15 55566205514956451 16 581177386017567675