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A214389 Number of 7X7X7 triangular 0..n arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors, and no element equal to its horizontal neighbors 0
128, 5247716, 3183854216, 405643523920, 21313909250888, 623154633711990, 11944886965820440, 166092394781968922, 1792145757381897992 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A214384

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=3

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

.......0.1............0.1............0.1............0.1............0.1

......1.0.1..........1.0.1..........1.0.1..........1.0.1..........1.0.1

.....1.0.1.0........1.0.1.0........1.0.1.0........1.0.1.0........1.0.1.0

....1.0.1.2.0......1.0.1.0.1......1.0.1.0.2......0.1.0.1.0......1.0.1.3.0

...1.0.2.0.2.0....2.1.0.2.0.1....1.0.2.0.2.3....0.3.0.1.2.0....1.3.0.3.2.0

..1.0.3.0.2.0.2..3.1.0.1.3.0.1..1.0.1.3.0.3.1..2.0.3.0.2.0.3..0.2.3.0.3.0.1

CROSSREFS

Sequence in context: A016939 A017011 A196995 * A017095 A017191 A017299

Adjacent sequences:  A214386 A214387 A214388 * A214390 A214391 A214392

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 14 2012

STATUS

approved

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Last modified October 1 16:22 EDT 2020. Contains 337443 sequences. (Running on oeis4.)