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A181004
T(n,k) = number of n X k binary matrices with rows and columns each in strictly increasing order as binary numbers and each row and column having an even number of 1's.
6
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, 0, 0, 1, 61, 61, 1, 0, 0, 0, 0, 0, 0, 1, 123, 632, 123, 1, 0, 0, 0, 0, 0, 0, 0, 199, 3686, 3686, 199, 0, 0, 0, 0, 0, 0, 0, 0, 214, 16675, 58741, 16675, 214, 0, 0, 0
OFFSET
1,25
COMMENTS
Table starts
.1.0.0.0...0......0.........0...........0..............0................0
.0.0.0.0...0......0.........0...........0..............0................0
.0.0.1.1...0......0.........0...........0..............0................0
.0.0.1.3...2......0.........1...........1..............0................0
.0.0.0.2..21.....61.......123.........199............214..............168
.0.0.0.0..61....632......3686.......16675..........59805...........175257
.0.0.0.1.123...3686.....58741......652374........5752742.........41985610
.0.0.0.1.199..16675....652374....16972746......338047350.......5565513638
.0.0.0.0.214..59805...5752742...338047350....14821714373.....527266113211
.0.0.0.0.168.175257..41985610..5565513638...527266113211...39880712826780
.0.0.0.0.127.434224.262890863.78452652352.15996779979401.2545622222227666
LINKS
CROSSREFS
Sequence in context: A348945 A151755 A325739 * A051344 A236534 A101856
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Sep 30 2010
STATUS
approved