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A098182
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a(n)=3a(n-1)-a(n-2)+a(n-3), a(0)=1,a(1)=1,a(2)=3.
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5
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1, 1, 3, 9, 25, 69, 191, 529, 1465, 4057, 11235, 31113, 86161, 238605, 660767, 1829857, 5067409, 14033137, 38861859, 107619849, 298030825, 825334485, 2285592479, 6329473777, 17528163337, 48540608713, 134423136579
(list; graph; refs; listen; history; internal format)
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