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 A186786 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants 3
 0, 580, 580, 2366, 11354, 2366, 22236, 63504, 63504, 22236, 118616, 739334, 696596, 739334, 118616, 891506, 8499038, 17120960, 17120960, 8499038, 891506, 5489048, 97501656, 281080458, 658080772, 281080458, 97501656, 5489048, 38326452 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Table starts .......0......580......2366.....22236....118616.....891506....5489048.38326452 .....580....11354.....63504....739334...8499038...97501656.1029483706 ....2366....63504....696596..17120960.281080458.5705992444 ...22236...739334..17120960.658080772 ..118616..8499038.281080458 ..891506.97501656 .5489048 LINKS R. H. Hardin, Table of n, a(n) for n = 1..31 EXAMPLE Some solutions for 4X3 ..1..2..1....2..1..1....1..2..0....3..1..0....3..2..0....2..2..2....1..1..0 ..0..2..2....0..0..0....1..3..0....3..2..3....0..2..3....1..1..1....1..2..1 ..0..2..3....2..1..2....0..1..0....0..0..0....0..0..3....0..1..2....0..0..0 ..0..2..3....3..1..1....0..3..0....2..0..0....0..0..0....3..2..1....1..3..1 CROSSREFS Column 1 is A185605 Sequence in context: A250727 A252985 A097769 * A185609 A127694 A185605 Adjacent sequences:  A186783 A186784 A186785 * A186787 A186788 A186789 KEYWORD nonn,tabl AUTHOR R. H. Hardin Feb 26 2011 STATUS approved

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Last modified January 17 15:20 EST 2022. Contains 350402 sequences. (Running on oeis4.)