# A192624 (b-file synthesized from sequence entry) 0 1 1 4 2 20 3 112 4 676 5 4328 6 28912 7 199392 8 1409364 9 10157828 10 74375640 11 551715264 12 4137527408 13 31318286632 14 238958947328 15 1835960454272 16 14192132860868 17 110298595778872 18 861338925309604 19 6755283201399776 20 53185599585579640