# A375468 (b-file synthesized from sequence entry) 0 0 1 1 2 1 3 3 4 8 5 23 6 62 7 178 8 495 9 1413 10 4015 11 11511 12 33000 13 95079 14 274163 15 792586 16 2294010 17 6649760 18 19295361 19 56048352 20 162940687 21 474069314 22 1380215558 23 4020916787 24 11720484787 25 34181438615 26 99733002848 27 291122869293 28 850134963598 29 2483484854325 30 7257482455313