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A028249
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Molien series for complete weight enumerator of self-dual code over GF(4) containing 1^n.
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0
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1, 1, 1, 2, 3, 3, 6, 7, 8, 11, 14, 15, 21, 24, 27, 33, 39, 42, 52, 58, 64, 74, 84, 90, 105, 115, 125, 140, 155, 165, 186, 201, 216, 237, 258, 273, 301, 322, 343, 371, 399, 420, 456, 484, 512, 548, 584, 612, 657, 693
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OFFSET
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0,4
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LINKS
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E. M. Rains and N. J. A. Sloane, Self-dual codes, pp. 177-294 of Handbook of Coding Theory, Elsevier, 1998 (Abstract, pdf, ps).
Index entries for linear recurrences with constant coefficients, signature (1,1,0,-1,-1,2,-1,-1,0,1,1,-1)
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FORMULA
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G.f.: (1+x^6)/((1-x)*(1-x^3)*(1-x^4)*(1-x^6)). - Ralf Stephan, Apr 29 2014
G.f.: ( 1-x^2+x^4 ) / ( (1-x+x^2)*(1+x)^2*(1+x+x^2)^2*(x-1)^4 ). - R. J. Mathar, Dec 18 2014
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MAPLE
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(1+x^12)/((1-x^2)*(1-x^6)*(1-x^8)*(1-x^12));
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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