|
|
A017082
|
|
a(n) = (8*n + 1)^6.
|
|
1
|
|
|
1, 531441, 24137569, 244140625, 1291467969, 4750104241, 13841287201, 34296447249, 75418890625, 151334226289, 282429536481, 496981290961, 832972004929, 1340095640625, 2081951752609, 3138428376721
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
LINKS
|
|
|
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); a(0)=1, a(1)=531441, a(2)=24137569, a(3)=244140625, a(4)=1291467969, a(5)=4750104241, a(6)=13841287201. - Harvey P. Dale, Dec 18 2012
|
|
MATHEMATICA
|
(8*Range[0, 30]+1)^6 (* or *) LinearRecurrence[{7, -21, 35, -35, 21, -7, 1}, {1, 531441, 24137569, 244140625, 1291467969, 4750104241, 13841287201}, 30] (* Harvey P. Dale, Dec 18 2012 *)
|
|
PROG
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|