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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A254260

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

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

Adjacent sequences:  A254261 A254262 A254263 * A254265 A254266 A254267

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 27 2015

STATUS

approved

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Last modified December 12 15:11 EST 2019. Contains 329960 sequences. (Running on oeis4.)