# A103421 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 3 5 7 6 14 7 30 8 62 9 129 10 263 11 534 12 1076 13 2160 14 4318 15 8612 16 17145 17 34097 18 67764 19 134638 20 267506 21 531606 22 1056812 23 2101854 24 4182462 25 8327263 26 16588973 27 33066080 28 65945522 29 131588128 30 262702054 31 524699094 32 1048433468 33 2095744336