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A197903 Ceiling((n+1/n)^4). 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
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
MATHEMATICA
Table[Ceiling[(n+1/n)^4], {n, 40}] (* Harvey P. Dale, Apr 09 2015 *)
PROG
(Magma) [Ceiling((n+1/n)^4): n in [1..50]]
CROSSREFS
Sequence in context: A185761 A205248 A205186 * A300901 A174086 A174081
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Oct 19 2011
STATUS
approved

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Last modified March 29 01:36 EDT 2024. Contains 371264 sequences. (Running on oeis4.)