# A298563 (b-file synthesized from sequence entry) 1 1 2 3 3 5 4 6 5 14 6 44 7 110 8 152 9 884 10 2144 11 8384 12 18632 13 116624 14 8394752 15 15370304 16 73995392 17 536920064 18 2147581952 19 34360131584