# A203837 (b-file synthesized from sequence entry) 0 0 1 0 2 1 3 1 4 2 5 3 6 7 7 12 8 28 9 51 10 117 11 221 12 498 13 964 14 2138 15 4212 16 9219 17 18401 18 39850 19 80333 20 172520 21 350437 22 747658 23 1527648 24 3242589 25 6655572 26 14070946 27 28983184 28 61085625 29 126167668 30 265275043 31 549067801 32 1152293771 33 2388951139 34 5006276579 35 10392343314 36 21753656201 37 45202392073 38 94536770344 39 196591219072