login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A256808 Number of (n+2)X(6+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 0 or 1 and no column sum 0 or 1 1
4690, 55798, 688353, 8090191, 95609517, 1138136868, 13512239171, 160298389688, 1902928304204, 22590412601705, 268141162733191, 3182827104119933, 37781089864549012, 448467854628363649, 5323365293380936886 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A256810

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

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

CROSSREFS

Cf. A256810

Sequence in context: A263066 A252773 A204073 * A114542 A114568 A251135

Adjacent sequences:  A256805 A256806 A256807 * A256809 A256810 A256811

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 10 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 January 24 21:49 EST 2022. Contains 350565 sequences. (Running on oeis4.)