The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A254887 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A254887

Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally and vertically
(history; published version)

#4 by R. H. Hardin at Tue Feb 10 08:06:06 EST 2015

STATUS

editing

approved

#3 by R. H. Hardin at Tue Feb 10 08:05:30 EST 2015

NAME

allocated for R. H. Hardin

Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally and vertically

DATA

512, 8944, 171400, 4577708, 42268052, 290329276, 1890553676, 6706657300, 27187563600, 107210607174, 372692369806, 1336057750714

OFFSET

1,1

COMMENTS

Diagonal of A254894

EXAMPLE

Some solutions for n=3

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

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

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

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

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

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Feb 10 2015

STATUS

approved

editing

#2 by R. H. Hardin at Tue Feb 10 08:03:10 EST 2015

KEYWORD

allocating

allocated

#1 by R. H. Hardin at Tue Feb 10 08:03:10 EST 2015

NAME

allocated for R. H. Hardin

KEYWORD

allocating

STATUS

approved