A109142 - OEIS

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A109142

G.f.: 18th root of Hamming weight enumerator of [18,9,8] code over GF(4) (cf. A014487).

1

1, 0, 0, 0, 153, 1020, 4284, 6120, -196146, -2652864, -19986084, -90202680, 85692546, 6608267064, 76663736316, 545345198712, 2029226503266, -9086615598096, -245241505186236, -2527595927294760, -16280108470658466, -42945349007834280, 518834893753561140, 9490863671561772360

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OFFSET

0,5

LINKS

Table of n, a(n) for n=0..23.

N. Heninger, E. M. Rains and N. J. A. Sloane, On the Integrality of n-th Roots of Generating Functions, J. Combinatorial Theory, Series A, 113 (2006), 1732-1745.

CROSSREFS

Sequence in context: A181775 A193249 A050209 * A014576 A087414 A184369

Adjacent sequences: A109139 A109140 A109141 * A109143 A109144 A109145

KEYWORD

sign

AUTHOR

N. J. A. Sloane and Nadia Heninger, Aug 18 2005

STATUS

approved