OFFSET
0,1
COMMENTS
A 9-cube or enneract is a nine-dimensional hypercube with 512 vertices, 2304 edges, 4608 square faces, 5376 cubic cells, 4032 tesseract 4-faces, 2016 penteract 5-faces, 672 hexeract 6-faces, 144 hepteract 7-faces and 18 octeract 8-faces.
LINKS
Wikipedia, Enneract.
MAPLE
for i from 9 to 9 do seq(binomial(i, j)*2^(i-j), j = 0 .. i-1) od;
PROG
(PARI) Vec((x+2)^9+O(x^10)) \\ Joerg Arndt, Apr 15 2013
CROSSREFS
KEYWORD
easy,fini,nonn,full
AUTHOR
Zerinvary Lajos, Dec 02 2007
STATUS
approved