# A049908 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 5 5 8 6 18 7 34 8 63 9 100 10 233 11 464 12 923 13 1820 14 3574 15 6784 16 12212 17 19460 18 45703 19 91404 20 182803 21 365580 22 731094 23 1461824 24 2922292 25 5839620 26 11666564 27 23261184 28 46248192 29 91400140 30 178422484 31 339423404 32 610707852 33 973392440