# A084321 (b-file synthesized from sequence entry) 1 1 2 3 3 5 4 10 5 19 6 35 7 64 8 139 9 256 10 536 11 1061 12 2095 13 4169 14 8282 15 16517 16 32903 17 65646 18 131205 19 262579 20 525083 21 1048893 22 2098826 23 4195521 24 8390583 25 16782032 26 33569609 27 67118347 28 134229613 29 268453180 30 536890474 31 1073764782 32 2147523518