# A000943 (b-file synthesized from sequence entry) 1 1 2 2 3 5 4 8 5 18 6 29 7 57 8 96 9 183 10 318 11 604 12 1080 13 2047 14 3762 15 7145 16 13354 17 25471 18 48164 19 92193 20 175780 21 337581 22 647313 23 1246849 24 2400828 25 4636375 26 8956045 27 17334785 28 33570800 29 65108045 30 126355319 31 245492226 32 477284164 33 928772631 34 1808538336