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A253330 Number of (5+1)X(n+1) 0..1 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw 1
676, 2042, 6190, 19312, 58505, 173903, 503944, 1397185, 3802746, 9816070, 25016754, 60535988, 145230766, 332520929, 757040896, 1655009001, 3605466139, 7587808715, 15940578578, 32532048134, 66375799304, 132239420396 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A253326

LINKS

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

R. H. Hardin, Empirical recurrence of order 63

FORMULA

Empirical recurrence of order 63 (see link above)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

CROSSREFS

Sequence in context: A064963 A300984 A185794 * A255076 A253323 A281405

Adjacent sequences:  A253327 A253328 A253329 * A253331 A253332 A253333

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 30 2014

STATUS

approved

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Last modified August 11 15:10 EDT 2022. Contains 356066 sequences. (Running on oeis4.)