# A006200 (b-file synthesized from sequence entry) 1 1 2 6 3 55 4 610 5 7980 6 120274 7 2052309 8 39110490 9 823324755 10 18974858540 11 475182478056 12 12848667150956 13 373081590628565 14 11578264139795430 15 382452947343624515 16 13397354334102974934 17 496082324933446766724 18 19360538560004548357830 19 794275868644522931369185