# A054226 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 2 4 7 5 10 6 19 7 34 8 60 9 112 10 214 11 400 12 761 13 1450 14 2774 15 5341 16 10322 17 19992 18 38823 19 75551 20 147250 21 287503 22 562102 23 1100266 24 2155940 25 4228715 26 8301245 27 16309119 28 32064447 29 63082900 30 124181649 31 244597440 32 482026958 33 950392529