# A347668 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 15 5 21 6 75 7 151 8 1365 9 5461 10 7407 11 14563 12 87381 13 184111 14 932067 15 5592405 16 13256071 17 26512143 18 357913941 19 1431655765 20 3817748707 21 22906492245 22 91625968981 23 244335917283 24 1466015503701 25 5212499568715 26 10424999137431 27 93824992236885