|
| |
|
|
A008511
|
|
Number of points on surface of 4-dimensional cube.
|
|
1
| |
|
|
0, 16, 80, 240, 544, 1040, 1776, 2800, 4160, 5904, 8080, 10736, 13920, 17680, 22064, 27120, 32896, 39440, 46800, 55024, 64160, 74256, 85360, 97520, 110784, 125200, 140816, 157680, 175840
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,2
|
|
|
LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..10000
Index to sequences with linear recurrences with constant coefficients, signature (4,-6,4,-1).
|
|
|
FORMULA
| a(n) = (n+1)^4-(n-1)^4.
G.f.: 16*x*(1+x+x^2)/(1-4*x+6*x^2-4*x^3+x^4). - Colin Barker, Jan 02 2012
|
|
|
MAPLE
| (n+1)^4-(n-1)^4;
|
|
|
PROG
| (MAGMA) [(n+1)^4-(n-1)^4: n in [0..30]]; // Vincenzo Librandi, Aug 27 2011
|
|
|
CROSSREFS
| Sequence in context: A044203 A044584 A111732 * A130810 A050468 A068778
Adjacent sequences: A008508 A008509 A008510 * A008512 A008513 A008514
|
|
|
KEYWORD
| nonn,easy
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
| |
|
|
