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A015497
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a(0)=1, a(1)=9, a(n) = sum_{k=0}^{k=n-1} 9^k a(k).
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0
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1, 9, 82, 6724, 4908520, 32209708240, 1901983271572000, 1010793793810766824000, 4834596391983083396187280000, 208113526867898819658489702096160000, 80627444554789525982513713046048334318400000
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