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 A254189 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally 14
 512, 2908, 2908, 14096, 20380, 14096, 66144, 142088, 140108, 66144, 299472, 968448, 1465824, 939056, 299472, 1303600, 6170408, 14601048, 13994248, 5818936, 1303600, 5525648, 38010356, 138055264, 199474076, 124599008, 35265504, 5525648 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......512........2908.........14096...........66144.............299472 ......2908.......20380........142088..........968448............6170408 .....14096......140108.......1465824........14601048..........138055264 .....66144......939056......13994248.......199474076.........2761863976 ....299472.....5818936.....124599008......2521994340........50440581336 ...1303600....35265504....1106508576.....32048165156.......934751059040 ...5525648...211785820....9808618856....406615285408.....17244253826864 ..23034276..1260109624...86680216604...5135656451504....316309557137336 ..94841688..7470540196..765784579880..64842235013056...5804947465146740 .386810592.44215816908.6764564938736.818830301031628.106550751458655472 LINKS R. H. Hardin, Table of n, a(n) for n = 1..261 FORMULA Empirical for column k: k=1: [linear recurrence of order 26] k=2: [order 51] for n>59 Empirical for row n: n=1: [same linear recurrence of order 26] n=2: [order 53] for n>64 EXAMPLE Some solutions for n=2 k=4 ..0..0..1..0..0..0....0..0..0..0..1..1....0..0..0..0..0..0....0..1..0..0..1..1 ..0..0..0..1..0..1....1..0..0..0..0..0....1..0..0..0..0..0....1..1..0..0..0..0 ..0..0..0..1..0..1....1..0..0..1..1..0....1..1..0..1..1..1....0..1..0..0..1..1 ..0..1..1..1..1..0....1..1..1..1..0..0....0..1..1..1..1..0....0..0..0..1..1..0 CROSSREFS Column 1 and row 1 are A253794 Sequence in context: A254586 A254361 A254354 * A253801 A253794 A253961 Adjacent sequences: A254186 A254187 A254188 * A254190 A254191 A254192 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Jan 26 2015 STATUS approved

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Last modified September 12 18:10 EDT 2024. Contains 375853 sequences. (Running on oeis4.)