# A026687 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 5 4 10 5 17 6 44 7 87 8 174 9 324 10 822 11 1707 12 3414 13 6595 14 16604 15 35300 16 70600 17 139114 18 348828 19 751901 20 1503802 21 3000177 22 7504156 23 16322561 24 32645122 25 65684626 26 164014374 27 359049028 28 718098056 29 1453825024 30 3625748104