# A183118 (b-file synthesized from sequence entry) 0 0 1 1 2 4 3 11 4 30 5 83 6 236 7 687 8 2026 9 6023 10 17984 11 53819 12 161254 13 483451 14 1449876 15 4348903 16 13045602 17 39135119 18 117402792 19 352204467 20 1056607454