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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A251342 Number of (n+1)X(7+1) 0..3 arrays with every 2X2 subblock summing to a nonzero multiple of 3 1
 2190625, 99776859, 6775415354, 687109914883, 91970680872031, 14450351430729220, 2476540453681100993, 444899690539687485323, 81997849049595954137818, 15325729998270029389138691 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 7 of A251343 LINKS R. H. Hardin, Table of n, a(n) for n = 1..21 EXAMPLE Some solutions for n=1 ..0..0..0..3..2..2..2..3....0..2..0..2..1..2..0..2....0..0..0..2..3..2..0..0 ..0..3..0..3..1..1..1..0....3..1..3..1..2..1..3..1....0..3..0..1..3..1..0..3 CROSSREFS Sequence in context: A224581 A224588 A234332 * A019289 A254803 A254810 Adjacent sequences: A251339 A251340 A251341 * A251343 A251344 A251345 KEYWORD nonn AUTHOR R. H. Hardin, Dec 01 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified March 22 01:15 EDT 2023. Contains 361413 sequences. (Running on oeis4.)