# A150962 (b-file synthesized from sequence entry) 0 1 1 2 2 9 3 35 4 166 5 727 6 3538 7 16294 8 80160 9 378927 10 1874930 11 9000443 12 44683110 13 216630208 14 1077697787 15 5260220811 16 26204060817 17 128518455419 18 640809487729 19 3154046495137 20 15736623881298 21 77664193244089 22 387673662776003 23 1917272347984752 24 9573667095262513 25 47425770367580942 26 236876010551566137