# A089427 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 3 4 4 5 18 6 33 7 161 8 433 9 1705 10 10789 11 29157 12 88720 13 490289 14 1881309 15 4731356 16 17455195 17 36595263 18 178053588 19 405917904 20 3256229459