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G.f. = 18th root of Hamming weight enumerator of [18,9,8]_4 self-dual code S_18 over GF(4) (cf. A014487).
0

%I #6 Mar 30 2012 18:54:36

%S 1,0,0,0,0,0,0,0,153,0,1020,0,4284,0,6120,0,-196146,0,-2652864,0,

%T -19986084,0,-90202680,0,85692546,0,6608267064,0,76663736316,0,

%U 545345198712,0,2029226503266,0,-9086615598096,0,-245241505186236,0,-2527595927294760,0,-16280108470658466

%N G.f. = 18th root of Hamming weight enumerator of [18,9,8]_4 self-dual code S_18 over GF(4) (cf. A014487).

%H N. Heninger, E. M. Rains and N. J. A. Sloane, <a href="http://arXiv.org/abs/math.NT/0509316">On the Integrality of n-th Roots of Generating Functions</a>, J. Combinatorial Theory, Series A, 113 (2006), 1732-1745.

%K sign

%O 0,9

%A _N. J. A. Sloane_ and _Nadia Heninger_, Aug 16 2005