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 A185575 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum 4
 256, 3392, 3392, 44944, 125664, 44944, 598688, 4649320, 4649320, 598688, 7974976, 173985944, 480362772, 173985944, 7974976, 106125920, 6508370600, 50465542904, 50465542904, 6508370600, 106125920, 1412256400, 243047375432, 5296925520216 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ........256.........3392.........44944.........598688.......7974976 .......3392.......125664.......4649320......173985944....6508370600 ......44944......4649320.....480362772....50465542904.5296925520216 .....598688....173985944...50465542904.14968484411348 ....7974976...6508370600.5296925520216 ..106125920.243047375432 .1412256400 LINKS R. H. Hardin, Table of n, a(n) for n = 1..31 EXAMPLE Some solutions for 4X3 ..0..0..2....0..0..0....2..0..0....0..0..0....0..2..0....2..2..2....2..0..0 ..0..1..3....0..0..3....1..2..2....0..0..3....0..3..3....0..0..3....1..1..2 ..2..0..0....0..2..1....0..0..2....2..0..3....0..0..1....2..0..1....2..2..2 ..1..2..0....3..1..0....0..1..2....0..2..2....2..0..2....3..2..0....3..0..1 CROSSREFS Sequence in context: A236254 A236251 A070056 * A185933 A185572 A185925 Adjacent sequences:  A185572 A185573 A185574 * A185576 A185577 A185578 KEYWORD nonn,tabl AUTHOR R. H. Hardin Jan 31 2011 STATUS approved

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Last modified June 19 19:03 EDT 2019. Contains 324222 sequences. (Running on oeis4.)