# A148323 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 14 5 41 6 134 7 451 8 1579 9 5725 10 21247 11 80532 12 311203 13 1220208 14 4851662 15 19519760 16 79346540 17 325592275 18 1347098177 19 5615181079 20 23565529525 21 99503559928 22 422509407783 23 1803261895238 24 7732529216295 25 33302199102857 26 144001008471676 27 624992627998857 28 2722004649269076