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A254804 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally 14
512, 2700, 2700, 12680, 10484, 12680, 47816, 40167, 46026, 47816, 178752, 121701, 133628, 132639, 178752, 618856, 426308, 362924, 351264, 479464, 618856, 2201616, 1351487, 1133390, 1075560, 1200192, 1478353, 2201616, 7686444, 4771368, 3598070 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
......512......2700.....12680.....47816.....178752.....618856....2201616
.....2700.....10484.....40167....121701.....426308....1351487....4771368
....12680.....46026....133628....362924....1133390....3598070...11836406
....47816....132639....351264...1075560....3330874...11202222...34896603
...178752....479464...1200192...3369689...11392932...36042356..105040512
...618856...1478353...3633517..11139423...34629826...96309005..253515215
..2201616...5237645..12325478..33038951...91512698..238103801..434785178
..7686444..17246499..38276893.101966575..255130532..525494884.1133168035
.27456624..60236570.128187410.299746659..687853766.1506994147.3388002996
.97621664.204026967.405105944.918337028.2020357475.4139903099.9547411698
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 18] for n>27
Empirical for row n:
n=1: [same linear recurrence of order 18] for n>27
EXAMPLE
Some solutions for n=3 k=4
..0..0..0..1..0..0....0..0..0..1..0..0....0..0..0..1..0..0....0..0..0..1..0..1
..0..0..0..0..0..0....1..0..0..1..0..1....1..1..0..0..0..0....0..0..0..0..1..0
..0..1..0..1..0..0....1..1..0..1..0..0....1..0..0..0..0..0....1..1..0..1..1..0
..1..1..0..0..0..1....1..0..0..1..0..1....0..0..0..0..1..1....1..0..0..1..1..1
..1..1..1..1..1..0....1..0..0..0..0..0....1..1..0..1..1..1....0..1..0..1..1..0
CROSSREFS
Column 1 and row 1 are A253813
Sequence in context: A254553 A254483 A254476 * A253820 A253813 A254512
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 08 2015
STATUS
approved

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Last modified June 24 19:44 EDT 2024. Contains 373690 sequences. (Running on oeis4.)