login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A192485 Half the number of nXnXn triangular binary arrays with every element equal to at most 3 neighbors 0
1, 4, 28, 312, 5496, 158444, 7386598, 558062828, 68366493762, 13583953615958, 4377011029211530, 2287186005680108048, 1938220889714632813912, 2663689661329760406050654 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

Some solutions for 6X6X6 with a(1,1)=0

.......0............0............0............0............0............0

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

.....0.1.0........1.0.1........1.1.1........1.1.1........1.0.1........0.1.1

....1.0.1.1......1.0.1.0......0.1.0.1......0.0.0.0......0.0.1.0......1.0.1.0

...1.1.0.0.1....1.1.0.1.1....1.0.0.1.0....1.0.1.1.0....1.0.1.1.1....0.0.1.0.1

..0.0.1.1.0.0..0.0.0.0.1.0..0.1.1.1.0.0..1.0.1.1.0.1..1.1.1.0.0.1..0.1.1.0.0.0

CROSSREFS

Sequence in context: A177554 A316212 A337592 * A332097 A198513 A113371

Adjacent sequences:  A192482 A192483 A192484 * A192486 A192487 A192488

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 02 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 27 18:22 EST 2020. Contains 338683 sequences. (Running on oeis4.)