# A099166 (b-file synthesized from sequence entry) 0 1 1 3 2 9 3 22 4 51 5 113 6 244 7 517 8 1081 9 2238 10 4599 11 9397 12 19116 13 38753 14 78349 15 158062 16 318331 17 640233 18 1286244 19 2581837 20 5178801 21 10382078 22 20803759 23 41671597 24 83446876 25 167061513 26 334394469 27 669228142 28 1339166931 29 2679483713