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A126901
Coordination sequence for 8-dimensional cyclotomic lattice Z[zeta_20].
0
1, 20, 200, 1300, 6180, 23100, 71720, 192700, 461800, 1009380, 2046200, 3896420, 7038700, 12156300, 20197080, 32444300, 50599120, 76875700, 114109800, 165881780, 236654900, 331929820, 458416200, 624222300, 839063480, 1114490500, 1464138520, 1903997700
OFFSET
0,2
LINKS
FORMULA
G.f.: (x^4+6*x^3+16*x^2+6*x+1)^2/(1-x)^8.
MATHEMATICA
CoefficientList[Series[(x^4+6x^3+16x^2+6x+1)^2/(1-x)^8, {x, 0, 40}], x] (* Harvey P. Dale, Jun 23 2013 *)
CROSSREFS
Sequence in context: A219935 A191299 A027716 * A008420 A045758 A035474
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Mar 17 2007
STATUS
approved