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A226266
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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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504, 486080, 1360627200, 13028011487232, 461548202708533248, 62904245232195703930880, 33630170777556360030742118400, 71219568024522244738221811324420096, 600357043171015092778940374122700581371904, 20193878525098148007889802657546998364965856870400
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OFFSET
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1,1
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COMMENTS
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N2×8(r+1, 2r+1; r, 0, r, 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))^n (2^(3n + 2))^n (2^(5n + 3))^n QP[2^(-2n-1), 2, n] QP[2^(-n-1), 2, n]^2)/(2^n^2 (4^n)^n (8^n)^(2n) QP[2^(-n), 2, n]^3);
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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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