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A147978
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a(n) = 7^n-6^n-5^n-4^n-3^n-2^n-1.
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3
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-5, -14, -42, -98, 126, 4606, 50478, 446782, 3622206, 28040446, 211134798, 1561328062, 11403051486, 82538901886, 593482158318, 4245770823742, 30254894691966, 214923605948926, 1522969836817038, 10770185918341822
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OFFSET
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1,1
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LINKS
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FORMULA
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G.f.: x*(11628*x^6-22736*x^5+17059*x^4-6370*x^3+1260*x^2-126*x+5)/((x-1)*(2*x-1)*(3*x-1)*(4*x-1)*(5*x-1)*(6*x-1)*(7*x-1)). - Colin Barker, Oct 29 2012
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MATHEMATICA
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lst={}; Do[p=7^n-6^n-5^n-4^n-3^n-2^n-1^n; AppendTo[lst, p], {n, 0, 5!}]; lst
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CROSSREFS
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KEYWORD
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sign,easy
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AUTHOR
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STATUS
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approved
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