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A258606 Number of (n+2)X(2+2) 0..2 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum less than the central column sum 1
76729, 567009, 2729104, 16806958, 90782784, 474650022, 2276816656, 10535922971, 45716854225, 193196028123, 780713616400, 3089065462326, 11835781060489, 44551750251450, 163755454109809, 593051074898232, 2109303841956964 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A258612

LINKS

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

EXAMPLE

Some solutions for n=1

..2..2..0..2....1..1..1..1....2..0..0..0....2..0..2..0....2..2..2..2

..2..2..2..2....1..2..1..1....0..0..2..2....0..1..2..2....2..2..1..2

..0..0..1..2....0..1..0..2....0..1..0..1....1..1..1..2....0..0..1..0

CROSSREFS

Cf. A258612

Sequence in context: A236709 A104327 A046720 * A152498 A237747 A237746

Adjacent sequences:  A258603 A258604 A258605 * A258607 A258608 A258609

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 05 2015

STATUS

approved

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Last modified October 24 10:40 EDT 2021. Contains 348225 sequences. (Running on oeis4.)