# A375279 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 7 5 16 6 30 7 61 8 137 9 303 10 644 11 1365 12 2936 13 6340 14 13625 15 29209 16 62701 17 134758 18 289547 19 621816 20 1335378 21 2868341 22 6161329 23 13233947 24 28424456 25 61052489 26 131135696 27 281667368 28 604991601 29 1299458257 30 2791106585 31 5995020362 32 12876698159 33 27657838272