# A291830 (b-file synthesized from sequence entry) 1 4 2 512 3 8748 4 16641 5 65536 6 312500 7 1119744 8 2130048 9 3294172 10 4787344 11 5359225 12 8388608 13 19131876 14 36393867 15 40000000 16 77948684 17 143327232 18 250994068 19 268468225 20 272646144 21 344882041 22 421654016 23 612780032 24 683437500 25 685980800 26 1073741824 27 1300078125