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A194612 Half the number of lower triangles of an (n+1)X(n+1) 0..5 array with no element equal to the average of its horizontal and vertical neighbors 0
69, 12438, 12561823, 73569838704, 2481372954501732, 481414314393133400117 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A194615

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for 3X3

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

..2.0....4.3....0.0....0.3....4.4....5.0....1.0....1.1....0.2....1.2....0.5

..1.5.2..0.4.0..0.4.3..4.1.2..5.0.5..2.4.0..0.4.5..2.5.1..4.2.4..4.1.2..2.5.4

CROSSREFS

Sequence in context: A232719 A297807 A251002 * A297768 A268847 A211212

Adjacent sequences:  A194609 A194610 A194611 * A194613 A194614 A194615

KEYWORD

nonn

AUTHOR

R. H. Hardin Aug 30 2011

STATUS

approved

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Last modified August 19 07:13 EDT 2022. Contains 356216 sequences. (Running on oeis4.)