# A266094 (b-file synthesized from sequence entry) 1 1 2 4 3 13 4 32 5 104 6 228 7 576 8 1408 9 4104 10 9824 11 19152 12 39816 13 82944 14 196992 15 441294 16 881280 17 1911168 18 4539024