A135273 - OEIS

%I #15 Oct 11 2019 11:16:23

%S 512,2304,4608,5376,4032,2016,672,144,18,1

%N Row 9 of A038207.

%C 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.

%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Enneract">Enneract</a>.

%p for i from 9 to 9 do seq(binomial(i, j)*2^(i-j), j = 0 .. i-1) od;

%o (PARI) Vec((x+2)^9+O(x^10)) \\ _Joerg Arndt_, Apr 15 2013

%Y Cf. A038207, A135269, A135270, A135271, A135272.

%K easy,fini,nonn,full

%O 0,1

%A _Zerinvary Lajos_, Dec 02 2007