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A254303 Number of (n+2)X(5+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
236024, 2313072, 13348182, 43077907, 201263574, 821922862, 3675487170, 18140259210, 87601779910, 447277560513, 2321983338080, 12222609640233, 64915326842622, 348011097705308, 1866735654640542, 10063744915282664 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A254306

LINKS

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

FORMULA

Empirical: a(n) = 7*a(n-1) +15*a(n-2) -126*a(n-3) -203*a(n-4) +265*a(n-5) +6249*a(n-6) -10276*a(n-7) -5439*a(n-8) +29657*a(n-9) +75601*a(n-10) -976826*a(n-11) -2172785*a(n-12) +11573447*a(n-13) +14604231*a(n-14) -10287784*a(n-15) -167266352*a(n-16) +182084512*a(n-17) -26942064*a(n-18) -1424358524*a(n-19) -1323832404*a(n-20) +16631876016*a(n-21) +32902813152*a(n-22) -69655063680*a(n-23) -237915042304*a(n-24) -54958975744*a(n-25) +994169744640*a(n-26) +1125905413120*a(n-27) -1453796193280*a(n-28) -4734952099840*a(n-29) -1116699197440*a(n-30) +7953619664896*a(n-31) +8988289302528*a(n-32) -2374581026816*a(n-33) -12811222319104*a(n-34) -13121482129408*a(n-35) -545694679040*a(n-36) +18986441900032*a(n-37) +19471288762368*a(n-38) -3001565577216*a(n-39) -17622636691456*a(n-40) -11735696146432*a(n-41) -1210308362240*a(n-42) +8351563907072*a(n-43) +9636295999488*a(n-44) -103079215104*a(n-45) -5360119185408*a(n-46) -1236950581248*a(n-47) +1236950581248*a(n-48) for n>62

EXAMPLE

Some solutions for n=1

..0..1..1..1..0..0..1....0..1..1..1..1..0..1....1..0..0..0..0..0..1

..1..0..0..1..1..0..1....0..1..0..1..1..0..0....1..0..0..1..0..0..1

..0..1..0..0..1..1..1....1..0..1..0..0..0..1....0..0..1..1..1..1..1

CROSSREFS

Sequence in context: A104286 A254264 A254257 * A269280 A092009 A160920

Adjacent sequences:  A254300 A254301 A254302 * A254304 A254305 A254306

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 27 2015

STATUS

approved

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Last modified December 5 03:03 EST 2021. Contains 349530 sequences. (Running on oeis4.)