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A270610
Number of 5X5X5 triangular 0..n arrays with some element plus some adjacent element totalling n+1 or n-1 exactly once.
1
0, 0, 443088, 46957788, 1008327378, 25162747992, 271906503420, 2992465755612, 20367499465482, 129329174634672, 624840436639956, 2766099092355012, 10373656913823810, 35810603737855596, 111074891756040534
OFFSET
1,3
COMMENTS
Row 5 of A270606.
LINKS
EXAMPLE
Some solutions for n=3
......0..........0..........0..........0..........2..........0..........0
.....0.3........0.0........2.3........0.0........0.3........0.0........0.3
....0.0.3......3.0.0......3.3.3......3.0.0......0.3.3......1.0.3......0.0.3
...0.0.3.2....0.3.3.1....3.3.2.3....3.0.1.0....3.3.3.3....3.0.3.2....0.3.0.0
..3.0.3.2.1..0.3.3.0.0..0.0.3.3.0..3.0.0.3.0..0.3.3.3.2..2.3.3.3.3..3.3.0.3.1
CROSSREFS
Cf. A270606.
Sequence in context: A287581 A230084 A250839 * A224634 A251349 A210307
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 20 2016
STATUS
approved