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A198070
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Round((n+1/n)^5).
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1
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32, 98, 412, 1387, 3802, 8918, 18593, 35409, 62785, 105101, 167817, 257593, 382409, 551685, 776401, 1069217, 1444593, 1918909, 2510585, 3240201, 4130616, 5207092, 6497408, 8031984, 9844000, 11969516, 14447592, 17320408
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OFFSET
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1,1
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 1..10000
Index entries for linear recurrences with constant coefficients, signature (6,-15,20,-15,6,-1).
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FORMULA
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a(n) = n*(n^4+5*n^2+10) = A197904(n)-1 for n>20. - Bruno Berselli, Oct 27 2011
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PROG
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(MAGMA) [Round((n+1/n)^5): n in [1..60]];
(PARI) a(n)=round((n+1/n)^5) \\ Charles R Greathouse IV, Oct 27 2011
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CROSSREFS
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Cf. A014056, A197904.
Sequence in context: A287925 A039519 A190176 * A197904 A273554 A218901
Adjacent sequences: A198067 A198068 A198069 * A198071 A198072 A198073
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KEYWORD
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nonn,easy
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AUTHOR
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Vincenzo Librandi, Oct 21 2011
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STATUS
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approved
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