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A091006
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Triangle T(n,k) read by rows giving number of inequivalent indecomposable binary linear [n,k] codes with all columns distinct (projective codes) (n >= 1, 1 <= k <= n).
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0
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1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 2, 1, 0, 0, 0, 1, 4, 3, 1, 0, 0, 0, 0, 5, 9, 4, 1, 0, 0, 0, 0, 5, 22, 19, 6, 1, 0, 0, 0, 0, 4, 40, 70, 35, 7, 1, 0, 0, 0, 0, 3, 60, 220, 190, 59, 9, 1, 0, 0, 0, 0, 2, 86, 629, 977, 466, 96, 11, 1, 0, 0, 0, 0, 1, 110, 1700
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,19
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LINKS
| H. Fripertinger, Isometry Classes of Codes
Index entries for sequences related to binary linear codes
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EXAMPLE
| 1; 0,0; 0,1,0; 0,0,1,0; 0,0,1,1,0; 0,0,1,2,1,0; ...
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CROSSREFS
| Sequence in context: A047998 A017847 A127841 * A167365 A025894 A051127
Adjacent sequences: A091003 A091004 A091005 * A091007 A091008 A091009
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KEYWORD
| nonn,tabl
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Mar 01 2004
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