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!)
 A203491 T(n,k)=Number of nXk 0..2 arrays with row sums equal and column sums unequal to adjacent columns 13
 3, 6, 3, 12, 10, 3, 24, 80, 36, 3, 48, 556, 624, 82, 3, 96, 3348, 9540, 3760, 256, 3, 192, 20596, 170868, 173860, 25002, 676, 3, 384, 134412, 3171708, 8518564, 3065704, 171068, 2050, 3, 768, 888232, 59683122, 442135180, 421158558, 56438584, 1107888 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .3.....6......12.........24..........48..........96.........192........384 .3....10......80........556........3348.......20596......134412.....888232 .3....36.....624.......9540......170868.....3171708....59683122.1152091884 .3....82....3760.....173860.....8518564...442135180.24148894412 .3...256...25002....3065704...421158558.61706303456 .3...676..171068...56438584.20726134056 .3..2050.1107888.1004305424 .3..5826.7411872 .3.17568 .3 LINKS R. H. Hardin, Table of n, a(n) for n = 1..58 EXAMPLE Some solutions for n=5 k=3 ..0..0..1....0..0..2....1..2..1....0..1..2....0..2..0....2..2..1....1..1..0 ..0..0..1....2..0..0....2..1..1....0..1..2....0..0..2....2..1..2....1..1..0 ..0..1..0....0..1..1....1..2..1....2..1..0....2..0..0....2..1..2....1..1..0 ..0..0..1....2..0..0....2..1..1....1..1..1....2..0..0....1..2..2....0..0..2 ..0..0..1....0..0..2....1..2..1....2..0..1....1..1..0....2..1..2....2..0..0 CROSSREFS Diagonal is A202712 Sequence in context: A210201 A275535 A160899 * A085709 A120910 A109044 Adjacent sequences:  A203488 A203489 A203490 * A203492 A203493 A203494 KEYWORD nonn,tabl AUTHOR R. H. Hardin Jan 02 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 April 6 11:51 EDT 2020. Contains 333273 sequences. (Running on oeis4.)