# A289694 (b-file synthesized from sequence entry) 1 0 2 0 3 0 4 1 5 4 6 16 7 64 8 236 9 818 10 2736 11 8934 12 28622 13 90324 14 281792 15 871556 16 2677750 17 8184383 18 24913238 19 75593383 20 228793147 21 691094857 22 2084237036 23 6277871658 24 18890568921 25 56798001639 26 170665733660 27 512554832309 28 1538718547049