# A308580 (b-file synthesized from sequence entry) 0 3 1 6 2 14 3 30 4 60 5 116 6 222 7 426 8 824 9 1608 10 3162 11 6254 12 12420 13 24732 14 49334 15 98514 16 196848 17 393488 18 786738 19 1573206 20 3146108 21 6291876 22 12583374 23 25166330 24 50332200 25 100663896 26 201327242 27 402653886 28 805307124 29 1610613548 30 3221226342 31 6442451874 32 12884902880 33 25769804832