# A049180 (b-file synthesized from sequence entry) 1 1 2 1 3 3 4 11 5 43 6 183 7 815 8 3749 9 17693 10 85161 11 416451 12 2063255 13 10334187 14 52241811 15 266203487 16 1365869249 17 7050739841 18 36591914977 19 190811893315 20 999264296139 21 5253232501219 22 27713207861343 23 146664411527631 24 778434156770069