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!)
A204755 Number of (n+1)X(n+1) 0..5 arrays with the permanents of all 2X2 subblocks equal and nonzero 0
1175, 38553, 833401, 306477369, 27008204541, 88406706477089, 30627642821922195 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A204763

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A204763 A204756 A027485 * A202199 A233870 A237774

Adjacent sequences:  A204752 A204753 A204754 * A204756 A204757 A204758

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 18 2012

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 July 24 13:48 EDT 2021. Contains 346273 sequences. (Running on oeis4.)