# A178901 (b-file synthesized from sequence entry) 1 2 2 4 3 6 4 12 5 20 6 36 7 70 8 136 9 270 10 540 11 1078 12 2148 13 4290 14 8568 15 17130 16 34256 17 68510 18 137016 19 274018 20 548020 21 1096032 22 2192058 23 4384099 24 8768184 25 17536350 26 35072700 27 70145379 28 140290752 29 280581496 30 561162990 31 1122325953 32 2244651904