# A243393 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 6 5 10 6 29 7 64 8 194 9 531 10 1733 11 5524 12 19430 13 69322 14 262044 15 1016740 16 4101318 17 16996157 18 72556640 19 317558689 20 1424644848 21 6536588420 22 30647561117 23 146647344812 24 715511358833 25 3556531372395 26 17996244725780 27 92634418530686 28 484756161038264