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A197605
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Floor( ( n + 1/n )^6 ).
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2
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64, 244, 1371, 5892, 19770, 54992, 132810, 287700, 572042, 1061520, 1861242, 3112580, 5000730, 7762992, 11697770, 17174292, 24643050, 34646960, 47833242, 64966020, 86939642, 114792720, 149722890, 193102292, 246493770, 311667792, 390620090, 485590020
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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*(64-204*x+1007*x^2-821*x^3+1017*x^4-455*x^5+125*x^6-15*x^7+3*x^8-x^9)/(1-x)^7. - Vincenzo Librandi, Dec 18 2014
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MATHEMATICA
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Table[Floor[(n + 1/n)^6], {n, 40}] (* T. D. Noe, Dec 27 2011 *)
CoefficientList[Series[(64 - 204 x + 1007 x^2 - 821 x^3 + 1017 x^4 - 455 x^5 + 125 x^6 - 15 x^7 + 3 x^8 - x^9) / (1 - x)^7, {x, 0, 40}], x] (* Vincenzo Librandi, Dec 18 2014 *)
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PROG
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(Magma) [Floor((n+1/n)^6): n in [1..40]]
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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