# A093113 (b-file synthesized from sequence entry) 1 1 2 2 3 6 4 16 5 62 6 192 7 652 8 2048 9 9270 10 31744 11 116948 12 393216 13 1533868 14 5341184 15 19445016 16 67108864 17 332958758 18 1215037440 19 4711687300 20 16642998272 21 67697833092 22 245257732096 23 923984441000 24 3298534883328 25 13952454631996