# A371891 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 8 4 21 5 61 6 203 7 724 8 2600 9 9291 10 33525 11 123537 12 463796 13 1759184 14 6706976 15 25696524 16 99069838 17 384429159 18 1499778661 19 5875513183 20 23099489574 21 91123553946 22 360649997698 23 1431724692900 24 5699142280127 25 22741352276386 26 90949212893978