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A197903
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Ceiling((n+1/n)^4).
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1
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16, 40, 124, 327, 732, 1447, 2604, 4359, 6892, 10407, 15132, 21319, 29244, 39207, 51532, 66567, 84684, 106279, 131772, 161607, 196252, 236199, 281964, 334087, 393132, 459687, 534364, 617799, 710652, 813607, 927372, 1052679, 1190284, 1340967, 1505532, 1684807
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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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a(n) = n^4 +4*n^2 +7, n>=3.
G.f.: (x^6-x^5-17*x^4+53*x^3-84*x^2+40*x-16)/(x-1)^5. - Harvey P. Dale, Apr 09 2015
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MATHEMATICA
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PROG
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(Magma) [Ceiling((n+1/n)^4): n in [1..50]]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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