login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A178296 Number of collinear point 5-tuples in a 6 X 6 X 6 X... n-dimensional cubic grid 0
0, 6, 88, 984, 9952, 96096, 907648, 8494464, 79355392, 743241216 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
FORMULA
Conjecture: a(n) = 10^n/2+2*8^n-5*6^n/2. a(n)= 24*a(n-1) -188*a(n-2) +480*a(n-3). G.f.: 2*x*(-3+28*x)/((6*x-1)*(8*x-1)*(10*x-1)). [R. J. Mathar, May 24 2010]
CROSSREFS
Sequence in context: A210012 A226426 A210005 * A122770 A265267 A218260
KEYWORD
nonn
AUTHOR
R. H. Hardin, suggested by R. J. Mathar in the Sequence Fans Mailing List, May 24 2010
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 19 03:18 EDT 2024. Contains 370952 sequences. (Running on oeis4.)