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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A265443 Number of nX4 0..n+4-2 arrays with upper left zero and lower right n+4-2 and each element differing from its horizontal and vertical neighbors by one or two. 1
2, 53, 2825, 57721, 744805, 19827238, 901139380, 27582975041, 585047767454, 12075039660966, 359970464643303, 12067493373744711, 338956805544196323, 8183389364550726340, 205413155196816637232, 5971274995018639609623 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A265447.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

..0..1..3..4....0..2..4..5....0..2..3..4....0..1..3..5....0..2..3..4

..2..3..5..3....2..4..5..3....2..4..2..3....1..3..4..3....2..3..4..3

..4..5..6..4....3..5..4..5....3..2..4..5....2..4..6..5....3..1..3..5

..5..6..5..6....5..4..5..6....5..3..5..6....4..6..5..6....4..3..4..6

CROSSREFS

Cf. A265447.

Sequence in context: A119777 A176943 A176946 * A234603 A087865 A278843

Adjacent sequences:  A265440 A265441 A265442 * A265444 A265445 A265446

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 09 2015

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 February 26 03:29 EST 2020. Contains 332273 sequences. (Running on oeis4.)