# A309462 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 8 4 17 5 35 6 72 7 149 8 308 9 636 10 1314 11 2715 12 5609 13 11588 14 23941 15 49462 16 102188 17 211120 18 436173 19 901131 20 1861732 21 3846329 22 7946496 23 16417420 24 33918306 25 70075047 26 144774689 27 299103768 28 617946857 29 1276675050 30 2637604132 31 5449276664 32 11258177753 33 23259337731