# A036620 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 4 5 9 6 20 7 47 8 112 9 277 10 692 11 1756 12 4483 13 11525 14 29688 15 76620 16 197745 17 510234 18 1315348 19 3387687 20 8715037 21 22395482 22 57487071 23 147411172 24 377624359 25 966473181 26 2471400115 27 6314595259 28 16121970455 29 41132128662 30 104870142461