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 A237225 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock equal 7
 256, 1416, 1416, 8238, 14472, 8238, 50998, 161598, 161598, 50998, 324760, 2006382, 3460428, 2006382, 324760, 2135910, 25423162, 84409628, 84409628, 25423162, 2135910, 14272968, 338131394, 2037318606, 4161666604, 2037318606, 338131394 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ......256........1416...........8238.............50998...............324760 .....1416.......14472.........161598...........2006382.............25423162 .....8238......161598........3460428..........84409628...........2037318606 ....50998.....2006382.......84409628........4161666604.........194556780556 ...324760....25423162.....2037318606......194556780556.......17019123155926 ..2135910...338131394....52300962414.....9987152949386.....1679338583744260 .14272968..4474548444..1301392331506...478478022593736...150228922070204060 .97077068.60750922148.33744588767732.24753454408306844.14957438198616004464 LINKS R. H. Hardin, Table of n, a(n) for n = 1..84 FORMULA Empirical for column k: k=1: [linear recurrence of order 26] k=2: [order 88] EXAMPLE Some solutions for n=2 k=4 ..0..0..1..0..3....0..0..1..1..1....0..0..1..3..2....0..0..3..3..3 ..1..0..0..2..0....2..0..3..2..1....0..2..1..2..3....0..3..3..3..0 ..1..1..0..1..0....3..1..0..1..3....1..3..3..1..3....3..3..2..3..3 CROSSREFS Sequence in context: A188865 A187964 A187956 * A237219 A237951 A237946 Adjacent sequences: A237222 A237223 A237224 * A237226 A237227 A237228 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Feb 05 2014 STATUS approved

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Last modified March 23 03:46 EDT 2023. Contains 361434 sequences. (Running on oeis4.)