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A226267
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Number of additive Z_2 Z_8 codes of a certain type (see Siap-Aydogdu for precise definition).
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6
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2352, 9721600, 449914060800, 280154359021436928, 2560999281742478158331904, 358821757256355942900943762227200, 787296929540087707656924853902883002777600, 27343461806425897751473875699316284363491645025419264
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OFFSET
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1,1
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COMMENTS
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N2×8(r+2, 2r+1; r, 0, 1, r) r>=1. (Siap-Aydogdu Table 1)
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LINKS
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MATHEMATICA
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QP = QPochhammer;
a[n_] := (2^(2n+1)(8^(n+1))^n (2^(2n+1)-1) QP[2^(-2-n), 2, n] QP[4^-n, 2, n])/((2^(n+1))^n QP[2^(-n), 2, n]^2 2^(n-1));
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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