# A228778 (b-file synthesized from sequence entry) 0 2 1 3 2 3 3 5 4 9 5 33 6 257 7 8193 8 2097153 9 17179869185 10 36028797018963969 11 618970019642690137449562113 12 22300745198530623141535718272648361505980417 13 13803492693581127574869511724554050904902217944340773110325048447598593