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A024066 a(n) = 6^n - n^4. 2
1, 5, 20, 135, 1040, 7151, 45360, 277535, 1675520, 10071135, 60456176, 362782415, 2176761600, 13060665455, 78364125680, 470184933951, 2821109841920, 16926659361215, 101559956563440, 609359739880175 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..500

Index entries for linear recurrences with constant coefficients, signature (11, -40, 70, -65, 31, -6).

MATHEMATICA

Table[6^n-n^4, {n, 0, 30}] (* or *) LinearRecurrence[{11, -40, 70, -65, 31, -6}, {1, 5, 20, 135, 1040, 7151}, 30] (* Harvey P. Dale, Apr 09 2018 *)

PROG

(MAGMA) [6^n-n^4: n in [0..25]]; // Vincenzo Librandi, Jul 03 2011

CROSSREFS

Sequence in context: A081067 A318250 A337292 * A009569 A061964 A133667

Adjacent sequences:  A024063 A024064 A024065 * A024067 A024068 A024069

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified July 25 20:18 EDT 2021. Contains 346291 sequences. (Running on oeis4.)