# A047775 (b-file synthesized from sequence entry) 1 0 2 0 3 0 4 0 5 2 6 5 7 11 8 25 9 66 10 131 11 349 12 708 13 1911 14 3856 15 10604 16 21597 17 59961 18 123266 19 345060 20 715198 21 2015416 22 4206926 23 11919257 24 25032840 25 71246129 26 150413234 27 429750208 28 911379241 29 2612614298 30 5562367173 31 15991792731 32 34164355260