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A122109
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a(0)=1, a(1)=2, a(2)=6, a(n)=9*a(n-2)-4*a(n-3) for n>2.
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0
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1, 2, 6, 14, 46, 102, 358, 734, 2814, 5174, 22390, 35310, 180814, 228230, 1486086, 1330814, 12461854, 6032982, 106833430, 4449422, 937368942, -387288922, 8418522790, -7235076066, 77315860798, -98789775754
(list; graph; refs; listen; history; internal format)
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