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A091008 Triangle T(n,k) read by rows giving number of inequivalent binary linear [n,k] codes with all columns distinct (projective codes) (n >= 1, 1 <= k <= n). 2
1, 0, 1, 0, 1, 2, 0, 0, 2, 3, 0, 0, 1, 4, 5, 0, 0, 1, 5, 9, 10, 0, 0, 1, 6, 14, 19, 20, 0, 0, 0, 6, 21, 35, 41, 42, 0, 0, 0, 5, 34, 72, 94, 101, 102, 0, 0, 0, 4, 50, 155, 235, 267, 275, 276, 0, 0, 0, 3, 67, 340, 652, 803, 847, 856, 857, 0, 0, 0, 2, 91, 791, 2076, 2897 (list; table; graph; refs; listen; history; internal format)
OFFSET

1,6

LINKS

H. Fripertinger, Isometry Classes of Codes

Index entries for sequences related to binary linear codes

CROSSREFS

A076834 gives last diagonal. Running sums across rows of triangle A076833.

Sequence in context: A153869 A128541 A122908 * A111006 A046742 A174739

Adjacent sequences:  A091005 A091006 A091007 * A091009 A091010 A091011

KEYWORD

nonn,tabl

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Mar 01 2004

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.