The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A205235 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero 9
 56, 266, 266, 1187, 2773, 1187, 4584, 27157, 27157, 4584, 17010, 221766, 640652, 221766, 17010, 58892, 1707082, 12273323, 12273323, 1707082, 58892, 198325, 11675764, 221519116, 586841773, 221519116, 11675764, 198325, 642908, 76088840 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .....56.......266.........1187...........4584...........17010...........58892 ....266......2773........27157.........221766.........1707082........11675764 ...1187.....27157.......640652.......12273323.......221519116......3408343704 ...4584....221766.....12273323......586841773.....26740726836...1029060698687 ..17010...1707082....221519116....26740726836...3156944585806.315651250338121 ..58892..11675764...3408343704..1029060698687.315651250338121 .198325..76088840..48815088704.36382087706267 .642908.460518847.628179958745 LINKS R. H. Hardin, Table of n, a(n) for n = 1..60 EXAMPLE Some solutions for n=4 k=3 ..2..1..1..1....0..1..1..2....0..1..0..1....1..1..1..2....0..1..0..2 ..2..0..2..2....1..2..2..1....1..2..2..2....0..1..2..2....2..2..2..1 ..0..1..1..1....2..0..2..2....1..2..2..2....1..1..1..2....0..2..0..1 ..2..1..2..0....2..2..1..2....1..2..2..2....2..1..2..2....2..2..2..1 ..0..1..1..2....2..0..2..2....1..2..2..2....2..1..1..0....2..2..2..0 CROSSREFS Sequence in context: A259039 A158487 A212778 * A205228 A110554 A253922 Adjacent sequences:  A205232 A205233 A205234 * A205236 A205237 A205238 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Jan 24 2012 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
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 27 04:10 EDT 2021. Contains 347673 sequences. (Running on oeis4.)