# A227975 (b-file synthesized from sequence entry) 1 1 2 2 3 5 4 6 5 10 6 18 7 30 8 82 9 4866 10 8784 11 10170 12 23364 13 76296 14 247166 15 585570 16 735480 17 848754 18 1559520 19 2884840 20 11272940 21 35642420 22 56652788 23 174935486 24 196398413 25 679063441 26 1398826844 27 1542228164 28 1665703953 29 2699813692 30 5734751503