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A270854 Number of 5X5X5 triangular 0..n arrays with some element plus some adjacent element totalling n+1, n or n-1 exactly once. 1
0, 0, 2298, 307494, 15754872, 469037376, 8746813158, 121991495904, 1213829981232, 9734824653450, 61574400558324, 331178241244350, 1508910046819356, 6093153192888900, 21845378487998154, 71477509051004274 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row 5 of A270850.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..25

EXAMPLE

Some solutions for n=3

......2..........2..........0..........3..........1..........3..........0

.....2.3........2.3........1.1........2.3........0.0........3.2........0.0

....3.3.2......3.3.3......0.0.0......3.2.3......0.0.0......3.2.3......0.0.0

...3.3.3.3....3.2.3.3....0.0.0.1....3.3.3.3....0.0.0.1....2.3.3.3....0.1.0.1

..3.2.3.3.3..3.3.3.3.3..1.0.0.0.0..3.2.3.3.2..0.1.0.0.1..3.3.2.3.3..0.1.0.0.0

CROSSREFS

Cf. A270850.

Sequence in context: A123911 A126173 A083572 * A260292 A281927 A179699

Adjacent sequences:  A270851 A270852 A270853 * A270855 A270856 A270857

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 24 2016

STATUS

approved

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Last modified November 15 21:37 EST 2019. Contains 329168 sequences. (Running on oeis4.)