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A011845
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a(n) = floor( binomial(n,8)/9).
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2
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0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 5, 18, 55, 143, 333, 715, 1430, 2701, 4862, 8398, 13996, 22610, 35530, 54479, 81719, 120175, 173586, 246675, 345345, 476905, 650325, 876525, 1168700, 1542684, 2017356, 2615091, 3362260, 4289780, 5433721, 6835972, 8544965, 10616471
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OFFSET
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0,11
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LINKS
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Index entries for linear recurrences with constant coefficients, signature (8, -28, 56, -70, 56, -28, 8, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -8, 28, -56, 70, -56, 28, -8, 1).
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FORMULA
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a(n) = floor(binomial(n+1,9)/(n+1)). [Gary Detlefs, Nov 23 2011]
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MATHEMATICA
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PROG
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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