# A149213 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 10 4 42 5 133 6 583 7 2107 8 9498 9 37100 10 170422 11 700327 12 3260691 13 13885192 14 65303709 15 285469307 16 1353084601 17 6034100741 18 28777781725 19 130354698204 20 624801809350 21 2865740094979 22 13792513955173 23 63908250241073 24 308648304990584 25 1442220043930524 26 6985728178113346 27 32873047087774126