# A150101 (b-file synthesized from sequence entry) 0 1 1 2 2 6 3 19 4 68 5 253 6 982 7 3904 8 15904 9 65870 10 276702 11 1176029 12 5049443 13 21864431 14 95369300 15 418700058 16 1848734071 17 8204001286 18 36570660638 19 163685587764 20 735324507172 21 3314279623363 22 14983732949119 23 67929967517380 24 308753250967957 25 1406646255864308 26 6422545729056850 27 29383868785665040