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 A029593 Theta series of quadratic form with Gram matrix [ 1, 0, 0; 0, 3, 1; 0, 1, 4 ]. 1

%I

%S 1,2,0,2,8,6,4,4,4,8,4,0,8,16,4,2,16,4,4,8,12,20,0,2,16,12,4,6,16,16,

%T 4,10,12,2,12,4,20,26,4,8,24,16,4,4,2,32,12,4,20,22,4,4,32,12,12,2,16,

%U 8,8,10,16,48,4,8,36,8,0,10,16,38,12,10,20,24,4,12,40,0,4,12

%N Theta series of quadratic form with Gram matrix [ 1, 0, 0; 0, 3, 1; 0, 1, 4 ].

%C This is the monoclinic P lattice (the classical holotype) of dimension 3.

%H John Cannon, <a href="/A029593/b029593.txt">Table of n, a(n) for n = 0..10000</a>

%H G. Nebe and N. J. A. Sloane, <a href="http://www.math.rwth-aachen.de/~Gabriele.Nebe/LATTICES/monoclinicP.html">Home page for this lattice</a>

%e 1 + 2*q + 2*q^3 + 8*q^4 + 6*q^5 + 4*q^6 + 4*q^7 + 4*q^8 + 8*q^9 + 4*q^10 + ...

%K nonn

%O 0,2

%A _N. J. A. Sloane_.

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Last modified December 8 05:15 EST 2021. Contains 349590 sequences. (Running on oeis4.)