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A254301
Number of (n+2)X(3+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 and vertically
1
12616, 93326, 517934, 2530381, 13348182, 69860227, 375506912, 2051413540, 11310694254, 62889999700, 351655793662, 1970566420399, 11065476492562, 62188075983543, 349725627460782, 1967369841833464, 11069592090734828
OFFSET
1,1
COMMENTS
Column 3 of A254306
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..0....1..0..0..0..0....0..1..0..0..1....1..0..0..1..1
..0..1..0..1..1....0..1..0..1..0....0..1..1..1..1....0..0..0..0..1
..1..1..1..0..0....0..1..0..1..0....1..1..0..1..0....0..1..1..0..0
..1..0..0..1..1....0..0..0..0..1....1..0..1..0..0....1..0..1..1..1
CROSSREFS
Sequence in context: A219332 A254262 A254255 * A237388 A185529 A078957
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 27 2015
STATUS
approved