The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A205954 T(n,k) = number of (n+1) X (k+1) 0..3 arrays with no 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors or the same number of counterclockwise edge increases as its vertical neighbors. 7
 256, 2120, 2120, 17920, 25512, 17920, 151824, 310912, 310912, 151824, 1285076, 3825072, 5550256, 3825072, 1285076, 10876432, 47118720, 101702648, 101702648, 47118720, 10876432, 92062852, 583496376, 1912957100, 2938041784, 1912957100 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......256........2120..........17920.........151824.........1285076 ......2120.......25512.........310912........3825072........47118720 .....17920......310912........5550256......101702648......1912957100 ....151824.....3825072......101702648.....2938041784.....90234357280 ...1285076....47118720.....1912957100....90234357280...4762415402596 ..10876432...583496376....36783376600..2915195222352.273204243466080 ..92062852..7243545064...718097911212.97376756715048 .779221408.90103381160.14168783055608 LINKS R. H. Hardin, Table of n, a(n) for n = 1..59 EXAMPLE Some solutions for n=4, k=3: ..3..2..2..3....0..1..0..0....1..2..1..2....1..0..0..0....2..2..1..1 ..1..1..3..3....0..2..0..0....3..0..1..3....0..3..3..2....2..2..0..2 ..1..2..1..2....0..1..1..2....0..0..2..3....3..3..3..0....3..1..0..1 ..2..3..0..0....2..1..1..0....0..0..1..3....1..2..0..0....2..2..2..1 ..0..3..0..0....3..3..2..3....0..2..1..2....1..1..2..3....2..2..3..2 CROSSREFS Column 1 is A205459. Sequence in context: A014711 A236451 A236445 * A205466 A205459 A237076 Adjacent sequences: A205951 A205952 A205953 * A205955 A205956 A205957 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Feb 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified March 31 00:51 EDT 2023. Contains 361623 sequences. (Running on oeis4.)