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A198022 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,1,1,1,2,0,0 for x=0,1,2,3,4,5,6 0
1, 7, 25, 286, 16905, 487756, 84846740, 20920795356, 8772493669576, 11944015498245136 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Every 0 is next to 0 4's, every 1 is next to 1 1's, every 2 is next to 2 1's, every 3 is next to 3 1's, every 4 is next to 4 2's, every 5 is next to 5 0's, every 6 is next to 6 0's

LINKS

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

EXAMPLE

Some solutions with all values from 0 to 6 for 7X7X7

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

.......0.0............1.2............3.1............1.3............2.1

......0.6.0..........3.2.4..........1.0.0..........0.0.1..........4.2.3

.....0.0.0.1........1.1.2.2........1.0.6.0........0.5.1.2........2.2.1.1

....0.5.0.1.2......0.0.0.1.1......2.2.0.0.0......0.0.0.2.4......1.1.0.0.0

...1.2.0.2.4.2....0.6.0.5.0.0....1.4.1.0.5.1....0.6.0.1.2.2....3.0.5.0.6.0

..1.3.1.1.2.1.1..0.0.0.0.0.0.0..1.2.2.1.0.0.1..0.0.0.1.0.1.1..1.1.0.0.0.0.0

CROSSREFS

Sequence in context: A215058 A214538 A197651 * A231579 A197721 A081298

Adjacent sequences:  A198019 A198020 A198021 * A198023 A198024 A198025

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 20 2011

STATUS

approved

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Last modified December 19 04:51 EST 2014. Contains 252175 sequences.