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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A235240 Number of (n+1) X (n+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 6, with no adjacent elements equal (constant stress tilted 1 X 1 tilings). 0
 210, 3146, 31858, 338282, 2965442, 28726138, 243061138, 2245014658 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A235248. LINKS EXAMPLE Some solutions for n=3 ..1..6..3..2....1..6..4..7....7..2..7..2....5..3..5..2....4..1..5..2 ..5..4..7..0....2..1..5..2....5..6..5..6....0..4..0..3....1..4..2..5 ..2..7..4..3....0..5..3..6....0..7..0..7....3..1..3..0....5..2..6..3 ..5..4..7..0....3..2..6..3....5..6..5..6....2..6..2..5....2..5..3..6 CROSSREFS Cf. A235248. Sequence in context: A024407 A027822 A024449 * A103604 A257711 A061133 Adjacent sequences:  A235237 A235238 A235239 * A235241 A235242 A235243 KEYWORD nonn AUTHOR R. H. Hardin, Jan 05 2014 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.

Last modified September 20 07:10 EDT 2021. Contains 347577 sequences. (Running on oeis4.)