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A254264
Number of (5+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
236024, 888391, 2192422, 9308828, 35691048, 159041102, 742483152, 3525898989, 17473539574, 89203393842, 463194102932, 2440606864521, 12983765106408, 69479824462051, 373041068149038, 2009522674970372, 10836010416317362
OFFSET
1,1
COMMENTS
Row 5 of A254260
LINKS
FORMULA
Empirical: a(n) = 5*a(n-1) +25*a(n-2) -76*a(n-3) -355*a(n-4) -445*a(n-5) +5359*a(n-6) +442*a(n-7) -4555*a(n-8) +20547*a(n-9) +116695*a(n-10) -743436*a(n-11) -3659657*a(n-12) +4254133*a(n-13) +23112497*a(n-14) +35937210*a(n-15) -95391932*a(n-16) -8699352*a(n-17) -44340768*a(n-18) -1513040060*a(n-19) -4349912524*a(n-20) +7932050968*a(n-21) +48766915088*a(n-22) +27878766496*a(n-23) -182157509312*a(n-24) -419273994368*a(n-25) +155621755904*a(n-26) +1437148924928*a(n-27) +1420501656576*a(n-28) -1893948786688*a(n-29) -4904596770816*a(n-30) -1855573876736*a(n-31) +5277141549056*a(n-32) +8179702071296*a(n-33) +3548181823488*a(n-34) -6025118482432*a(n-35) -12595931643904*a(n-36) -6205421387776*a(n-37) +7060445986816*a(n-38) +11119326396416*a(n-39) +4616016101376*a(n-40) -2503663943680*a(n-41) -6217636249600*a(n-42) -4083708592128*a(n-43) +1468878815232*a(n-44) +2834678415360*a(n-45) +309237645312*a(n-46) -618475290624*a(n-47) for n>58
EXAMPLE
Some solutions for n=1
..0..1..0....1..1..1....0..1..1....0..1..1....0..0..0....1..0..0....1..0..1
..1..0..0....1..1..1....0..1..1....1..0..0....0..0..1....1..0..0....1..1..1
..1..0..0....1..0..0....1..0..1....1..0..0....0..0..1....0..1..1....1..1..1
..1..0..0....0..0..0....1..0..1....1..0..1....1..0..0....1..0..0....0..0..0
..1..1..0....1..1..0....1..0..0....1..1..0....1..0..1....1..0..1....0..1..0
..1..0..0....1..0..0....0..0..0....1..0..1....1..1..0....1..0..1....0..0..0
..1..1..0....1..1..0....1..0..1....1..1..0....0..0..1....1..1..0....1..0..1
CROSSREFS
Sequence in context: A132905 A100780 A104286 * A254257 A254303 A269280
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 27 2015
STATUS
approved