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A265472 Number of 7Xn 0..7+n-2 arrays with upper left zero and lower right 7+n-2 and each element differing from its horizontal and antidiagonal neighbors by one or two. 0
16807, 448920, 226627855, 90139418667, 40379152013237, 15984824483462062, 6109458550119472926, 2389935645198640348518, 930872824490636727708065, 338013705923361717540139746 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A265466.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=1

..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0

..5....0....0....1....2....2....2....6....3....5....1....5....1....6....0....0

..3....3....5....2....4....6....6....2....1....5....4....5....4....4....0....6

..4....0....5....6....5....4....3....4....5....5....5....0....5....5....0....4

..5....4....4....6....2....0....3....6....5....1....1....4....2....2....6....4

..6....1....0....0....3....5....0....2....0....6....0....6....5....5....2....1

..6....6....6....6....6....6....6....6....6....6....6....6....6....6....6....6

CROSSREFS

Cf. A265466.

Sequence in context: A208630 A067493 A016925 * A016985 A017153 A265479

Adjacent sequences:  A265469 A265470 A265471 * A265473 A265474 A265475

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 09 2015

STATUS

approved

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Last modified August 3 01:59 EDT 2021. Contains 346430 sequences. (Running on oeis4.)