login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A181266 T(n,k)=Number of nXk binary matrices M with rows in strictly increasing order and rows of M*Mtranspose (mod 2) in strictly increasing order 8
2, 4, 1, 8, 2, 0, 16, 11, 0, 0, 32, 44, 6, 0, 0, 64, 188, 87, 4, 0, 0, 128, 752, 730, 111, 1, 0, 0, 256, 3056, 6236, 1793, 66, 0, 0, 0, 512, 12224, 49400, 32124, 2607, 24, 0, 0, 0, 1024, 49088, 398032, 513260, 108161, 2575, 5, 0, 0, 0, 2048, 196352, 3162528, 8397376 (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

.1.2.11..44..188....752......3056......12224.......49088.......196352

.0.0..6..87..730...6236.....49400.....398032.....3162528.....25293504

.0.0..4.111.1793..32124....513260....8397376...133979600...2151884352

.0.0..1..66.2607.108161...3610319..120854852..3883975540.125298805600

.0.0..0..24.2575.256746..17946611.1225897310.79509209528.............

.0.0..0...5.1790.428573..63961223.9014442178.........................

.0.0..0...1..896.520349.167427191....................................

.0.0..0...0..296.480849..............................................

.0.0..0...0...55.....................................................

LINKS

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

CROSSREFS

Sequence in context: A204182 A103324 A221073 * A087060 A248112 A173122

Adjacent sequences:  A181263 A181264 A181265 * A181267 A181268 A181269

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Oct 10 2010

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified February 18 23:26 EST 2018. Contains 299330 sequences. (Running on oeis4.)