

A197651


Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 5,1,1,1,4,0,3 for x=0,1,2,3,4,5,6


0



1, 7, 25, 279, 15573, 403867, 64115297, 13562905311, 4563971866877, 5430296531364427, 7765379732369266217
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OFFSET

1,2


COMMENTS

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


LINKS

Table of n, a(n) for n=1..11.


EXAMPLE

Some solutions for 5X5X5
......0..........0..........1..........0..........0..........0..........1
.....1.1........0.1........1.0........2.1........2.1........1.0........0.1
....2.0.0......0.1.2......0.2.0......0.1.0......2.1.2......2.1.0......0.0.0
...1.3.1.2....1.0.0.2....1.1.3.1....0.2.0.1....1.3.0.2....2.2.0.2....0.0.2.1
..2.1.0.1.0..0.1.2.1.1..0.2.2.1.0..1.1.2.1.0..0.1.2.1.1..1.1.2.1.1..1.1.2.1.2


CROSSREFS

Sequence in context: A215058 A214538 A290882 * A198022 A231579 A197721
Adjacent sequences: A197648 A197649 A197650 * A197652 A197653 A197654


KEYWORD

nonn


AUTHOR

R. H. Hardin Oct 16 2011


STATUS

approved



