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A255032 Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
42890, 149676, 246173, 281112, 340084, 301745, 310872, 321641, 365650, 388347, 456154, 520919, 607758, 664717, 850912, 1044341, 1325468, 1478889, 2146514, 2860091, 3875642, 4447991, 7000750, 9802797, 13761536, 15966869, 26093244 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A255036

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +a(n-2) -a(n-3) +4*a(n-4) -3*a(n-5) -5*a(n-6) +3*a(n-7) +a(n-8) -4*a(n-9) +4*a(n-10) +4*a(n-11) -4*a(n-12) for n>20

EXAMPLE

Some solutions for n=2

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

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

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

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

CROSSREFS

Cf. A255036

Sequence in context: A236032 A014892 A255039 * A256950 A237847 A236984

Adjacent sequences:  A255029 A255030 A255031 * A255033 A255034 A255035

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 13 2015

STATUS

approved

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Last modified December 6 06:14 EST 2021. Contains 349563 sequences. (Running on oeis4.)