# A109165 (b-file synthesized from sequence entry) 0 1 1 2 2 5 3 10 4 23 5 46 6 105 7 210 8 479 9 958 10 2185 11 4370 12 9967 13 19934 14 45465 15 90930 16 207391 17 414782 18 946025 19 1892050 20 4315343 21 8630686 22 19684665 23 39369330 24 89792639 25 179585278 26 409593865 27 819187730 28 1868384047 29 3736768094 30 8522732505