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A254262
Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the diagonal and antidiagonal minus the sum of the minimums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally
1
12616, 59531, 268900, 1420232, 7815717, 43088793, 240716320, 1346708544, 7559651334, 42449504452, 238658639992, 1342042143877, 7550426286493, 42481932027323, 239056968325836, 1345288929918460, 7570964561656366
OFFSET
1,1
COMMENTS
Row 3 of A254260
LINKS
FORMULA
Empirical: a(n) = 10*a(n-1) -17*a(n-2) -84*a(n-3) +260*a(n-4) -164*a(n-5) -564*a(n-6) +2856*a(n-7) +11170*a(n-8) -41228*a(n-9) -72878*a(n-10) +251424*a(n-11) -198452*a(n-12) -328104*a(n-13) +2628780*a(n-14) +4648696*a(n-15) -20786505*a(n-16) -29452526*a(n-17) +74588439*a(n-18) +73057204*a(n-19) -41058408*a(n-20) -209594372*a(n-21) -74206736*a(n-22) +213851488*a(n-23) -212060864*a(n-24) +1110211136*a(n-25) -353377472*a(n-26) -1735241984*a(n-27) +1881662208*a(n-28) -2041185792*a(n-29) +721603584*a(n-30) +3116957696*a(n-31) -3646394368*a(n-32) +2008072192*a(n-33) -474447872*a(n-34) -2278555648*a(n-35) +2827354112*a(n-36) -1106116608*a(n-37) +103284736*a(n-38) +605028352*a(n-39) -788529152*a(n-40) +268435456*a(n-41) for n>47
EXAMPLE
Some solutions for n=2
..1..1..0..0....1..1..1..0....0..1..0..1....0..1..1..0....1..1..1..0
..1..0..1..1....1..1..1..1....1..1..1..0....0..1..1..0....0..0..1..1
..1..0..1..1....0..1..1..0....1..0..0..1....0..0..0..0....0..1..0..1
..0..0..0..1....0..1..1..0....0..1..1..0....0..1..1..0....0..0..0..1
..1..1..0..1....0..1..0..0....0..0..1..0....1..1..1..1....1..1..1..0
CROSSREFS
Sequence in context: A187136 A185841 A219332 * A254255 A254301 A237388
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 27 2015
STATUS
approved