# A137990 (b-file synthesized from sequence entry) 0 2 1 7 2 19 3 109 4 163 5 487 6 1459 7 17497 8 52489 9 39367 10 472393 11 4960117 12 5314411 13 102036673 14 19131877 15 57395629 16 86093443 17 258280327 18 3874204891 19 23245229341 20 90656394427 21 585779779369 22 251048476873 23 9790890598009 24 4518872583697