# A191768 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 4 4 10 5 25 6 68 7 193 8 565 9 1688 10 5136 11 15854 12 49517 13 156191 14 496836 15 1591924 16 5133091 17 16643856 18 54234349 19 177505376 20 583272256 21 1923482331 22 6363842492 23 21117432227 24 70265970878 25 234388421515 26 783664894313 27 2625748635300