# A227616 (b-file synthesized from sequence entry) 0 1 1 3 2 3 3 5 4 12 5 30 6 58 7 128 8 237 9 476 10 975 11 1956 12 3899 13 7798 14 15534 15 31270 16 62262 17 124635 18 248944 19 497797 20 995730 21 1990576 22 3983767 23 7969049 24 15935289 25 31870309 26 63739461 27 127519282 28 254994762 29 510016513 30 1020092276 31 2040066241 32 4080236749