A016806 a(n) = (4n)^6.

0, 4096, 262144, 2985984, 16777216, 64000000, 191102976, 481890304, 1073741824, 2176782336, 4096000000, 7256313856, 12230590464, 19770609664, 30840979456, 46656000000, 68719476736, 98867482624

Offset

0,2

Links

Table of n, a(n) for n=0..17.

Index entries for linear recurrences with constant coefficients, signature (7, -21, 35, -35, 21, -7, 1).

Formula

a(n) = 7*a(n-1)-21*a(n-2)+35*a(n-3)-35*a(n-4)+21*a(n-5)-7*a(n-6)+a(n-7). - Wesley Ivan Hurt, May 05 2021

Mathematica

(4 Range[0, 20])^6 (* or  *) LinearRecurrence[{7, -21, 35, -35, 21, -7, 1}, {0, 4096, 262144, 2985984, 16777216, 64000000, 191102976}, 20] (* Harvey P. Dale, Aug 07 2023 *)

Prog

(Magma) [(4*n)^6 : n in [0..40]]; // Wesley Ivan Hurt, May 05 2021

Crossrefs

Sequence in context: A017488 A017620 A066390 * A231844 A232961 A223966

Adjacent sequences: A016803 A016804 A016805 * A016807 A016808 A016809

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved