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A210633 G.f. for Ehrhart quasi-polynomials for hyperplane arrangements of type E_7. 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 6, 12, 25, 44, 79, 128, 208, 318, 483, 704, 1019, 1430, 1992, 2712, 3664, 4862, 6407, 8320, 10735, 13686, 17344, 21760, 27153, 33592, 41353, 50532, 61468, 74290, 89415, 107008, 127576, 151332, 178882, 210496, 246898, 288420, 335920, 389808, 451088, 520260 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,20

REFERENCES

Blass, Andreas; Sagan, Bruce E. Characteristic and Ehrhart polynomials. J. Algebraic Combin. 7 (1998), no. 2, 115--126. MR1609889 (99c:05204)

LINKS

Table of n, a(n) for n=0..59.

FORMULA

G.f. = x^18*f(1)^2*f(2)^3*f(3)^2*f(4) where f(k)=1/(1-x^k).

CROSSREFS

Sequence in context: A034882 A175943 A210068 * A137829 A045925 A128020

Adjacent sequences:  A210630 A210631 A210632 * A210634 A210635 A210636

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 25 2012

STATUS

approved

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Last modified May 25 23:56 EDT 2013. Contains 225650 sequences.