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A181274 T(n,k)=Number of nXk binary matrices M with rows in strictly increasing order and rows of M*Mtranspose (mod 2) in strictly decreasing order 8
2, 4, 0, 8, 3, 0, 16, 11, 0, 0, 32, 48, 9, 0, 0, 64, 188, 79, 0, 0, 0, 128, 768, 766, 58, 0, 0, 0, 256, 3056, 6060, 1629, 13, 0, 0, 0, 512, 12288, 49928, 28924, 1991, 3, 0, 0, 0, 1024, 49088, 395024, 507052, 87873, 1420, 0, 0, 0, 0, 2048, 196608, 3170784, 8211776 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.2.4..8.16...32.....64.......128........256.........512.........1024

.0.3.11.48..188....768......3056......12288.......49088.......196608

.0.0..9.79..766...6060.....49928.....395024.....3170784.....25244608

.0.0..0.58.1629..28924....507052....8211776...133693904...2140571200

.0.0..0.13.1991..87873...3409059..115127924..3829185508.123796928928

.0.0..0..3.1420.177193..15691171.1126220822.76961864884.............

.0.0..0..0..592.233363..50841045.7892201343.........................

.0.0..0..0..120.205181.118451006....................................

.0.0..0..0...11.123441..............................................

.0.0..0..0....0.....................................................

LINKS

R. H. Hardin, Table of n, a(n) for n=1..108

CROSSREFS

Sequence in context: A208745 A137511 A011166 * A115341 A101160 A103191

Adjacent sequences:  A181271 A181272 A181273 * A181275 A181276 A181277

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Oct 10 2010

STATUS

approved

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Last modified May 19 13:34 EDT 2019. Contains 323393 sequences. (Running on oeis4.)