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A265595 Number of nX2 0..n*2-1 arrays with upper left zero and lower right n*2-1 and each element differing from its horizontal, vertical and antidiagonal neighbors by a power of two. 1
1, 2, 4, 8, 166, 257, 1627, 19283, 90682, 542663, 6657907, 21585283, 151468895, 1794394408, 6074973762, 38138795310, 768443343629, 2396280011230, 16859340797106, 253945311071870, 892229591233283, 6144902621608354 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 2 of A265601.

LINKS

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

EXAMPLE

All solutions for n=4

..0..1....0..4....0..1....0..4....0..4....0..1....0..4....0..4

..2..3....2..6....2..3....2..3....2..3....2..3....2..3....2..6

..1..5....4..5....4..5....4..5....4..5....4..5....1..5....4..5

..3..7....6..7....6..7....3..7....6..7....3..7....3..7....3..7

CROSSREFS

Cf. A265601.

Sequence in context: A110746 A084010 A203630 * A133036 A083147 A012648

Adjacent sequences:  A265592 A265593 A265594 * A265596 A265597 A265598

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 10 2015

STATUS

approved

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Last modified January 20 10:31 EST 2022. Contains 350471 sequences. (Running on oeis4.)