# A346579 (b-file synthesized from sequence entry) 1 1 2 4 3 30 4 240 5 2125 6 19776 7 192129 8 1922496 9 19692504 10 205444500 11 2175519379 12 23322637440 13 252631900235 14 2760767859780 15 30400169155500 16 336977763170048 17 3757141504436392 18 42107201575798248 19 474084628585822412 20 5359833703935374000 21 60823006052351537106 22 692556314455384443196