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A233875 T(n,k)=Number of (n+1)X(k+1) 0..7 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 21 7
224, 1176, 1176, 5984, 5404, 5984, 34416, 26488, 26488, 34416, 189632, 155104, 139880, 155104, 189632, 1128928, 909408, 907940, 907940, 909408, 1128928, 6414208, 5878272, 6146640, 6887232, 6146640, 5878272, 6414208, 38622656 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
........224........1176.........5984........34416........189632.......1128928
.......1176........5404........26488.......155104........909408.......5878272
.......5984.......26488.......139880.......907940.......6146640......46051092
......34416......155104.......907940......6887232......57147272.....530983144
.....189632......909408......6146640.....57147272.....608085728....7353231356
....1128928.....5878272.....46051092....530983144....7353231356..117645672328
....6414208....36964980....343425768...5012939992...91827779048.1973200783776
...38622656...249710396...2756337624..50952500976.1235220618536
..222041856..1622032500..21588683624.512188465988
.1341849472.11215026376.180216035036
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 14]
k=2: [order 71]
EXAMPLE
Some solutions for n=3 k=4
..0..7..7..7..6....0..4..1..4..7....0..1..1..7..1....0..3..0..7..1
..0..0..7..0..6....4..7..1..7..1....1..7..4..1..0....0..6..6..6..3
..7..0..0..0..3....7..1..4..1..4....4..7..1..7..1....3..0..3..0..6
..3..3..6..3..7....4..1..7..7..1....1..1..0..1..0....6..6..6..6..3
CROSSREFS
Sequence in context: A158227 A061524 A156813 * A233869 A146745 A015048
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 17 2013
STATUS
approved

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Last modified April 22 01:34 EDT 2024. Contains 371887 sequences. (Running on oeis4.)