# A101890 (b-file synthesized from sequence entry) 0 0 1 0 2 1 3 3 4 7 5 15 6 32 7 70 8 157 9 357 10 815 11 1859 12 4232 13 9620 14 21853 15 49635 16 112747 17 256139 18 581944 19 1322210 20 3004145 21 6825557 22 15507867 23 35234183 24 80052656 25 181881000 26 413236953 27 938882307 28 2133159119 29 4846579847 30 11011525360