A197907 Ceiling((n+1/n)^8).

256, 1526, 15242, 106442, 534598, 2091240, 6776037, 18992711, 47486564, 108285671, 228948164, 454458311, 855154436, 1537112039, 2655445796, 4431034439, 7171212836, 11295015911, 17363599364, 26116502471, 38514458564, 55789499111, 79503137636, 111613460039

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..10000

Index entries for linear recurrences with constant coefficients, signature (9,-36,84,-126,126,-84,36,-9,1).

Formula

For n > 7, a(n) = n^8 + 8n^6 + 28n^4 + 56n^2 + 70. [Charles R Greathouse IV, Dec 27 2011]

Mathematica

Table[Ceiling[(n+1/n)^8], {n, 30}] (* Harvey P. Dale, Jul 10 2013 *)

Prog

(Magma) [Ceiling((n+1/n)^8): n in [1..40]]
(PARI) a(n)=ceil((n+1/n)^8) \\ Charles R Greathouse IV, Dec 27 2011

Crossrefs

Cf. A014058.

Sequence in context: A237135 A197709 A198073 * A218525 A237403 A237399

Adjacent sequences: A197904 A197905 A197906 * A197908 A197909 A197910

Keyword

nonn,easy

Author

Vincenzo Librandi, Oct 19 2011

Status

approved