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A121401
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a(n)=((sqrt(3)+1)^n+(sqrt(3)-1)^n)^2/2^(n+1).
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0
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2, 3, 8, 27, 98, 363, 1352, 5043, 18818, 70227, 262088, 978123, 3650402, 13623483, 50843528, 189750627, 708158978, 2642885283, 9863382152, 36810643323, 137379191138, 512706121227, 1913445293768, 7141075053843, 26650854921602
(list; graph; refs; listen; history; internal format)
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