# A028351 (b-file synthesized from sequence entry) 1 1 2 0 3 1 4 1 5 5 6 9 7 33 8 85 9 276 10 827 11 2693 12 8626 13 28639 14 95393 15 323367 16 1104525 17 3813797 18 13266366 19 46509357 20 164098390