The On-Line Encyclopedia of Integer Sequences (OEIS)

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A183291

Number of nXnXnXn triangular pyramidal binary arrays with the number of 0-0 adjacencies equal to the number of 0-1 adjacencies
(history; published version)

#4 by Russ Cox at Sat Mar 31 12:35:50 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net) _ Jan 03 2011

Discussion

Sat Mar 31

12:35

OEIS Server: https://oeis.org/edit/global/875

#3 by N. J. A. Sloane at Mon Jan 03 15:12:59 EST 2011

STATUS

proposed

approved

#2 by Ron Hardin at Mon Jan 03 14:14:04 EST 2011

NAME

allocated for Ron HardinNumber of nXnXnXn triangular pyramidal binary arrays with the number of 0-0 adjacencies equal to the number of 0-1 adjacencies

DATA

2, 5, 75, 29721, 331189203

OFFSET

1,1

EXAMPLE

Some solutions for 3X3X3X3

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

...

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

...0.1....0.0....0.0....0.1....0.0....0.0....0.0....0.0....0.1....0.0....0.0

...

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

...0.1....0.1....1.0....0.0....0.0....0.0....0.0....0.0....0.0....1.1....1.0

..0.0.0..0.0.0..1.0.1..1.1.0..0.1.0..1.0.1..1.1.1..1.0.1..0.1.0..0.0.1..0.0.1

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Jan 03 2011

STATUS

approved

proposed

#1 by Ron Hardin at Mon Jan 03 14:10:07 EST 2011

NAME

allocated for Ron Hardin

KEYWORD

allocated

STATUS

approved