# A238431 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 3 5 5 6 10 7 19 8 36 9 69 10 135 11 258 12 500 13 963 14 1862 15 3592 16 6940 17 13393 18 25869 19 49939 20 96437 21 186190 22 359531 23 694176 24 1340393 25 2588071 26 4997263 27 9648958 28 18630886 29 35973552 30 69460077 31 134117616 32 258962680 33 500020761 34 965470897 35 1864189893 36 3599491983 37 6950118531 38 13419713384 39 25911601377