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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A187643 Number of (n+2) X 6 0..2 arrays with each 3 X 3 subblock having a sum of 9. 1
 596653, 1747075, 5273797, 17048731, 67476109, 275808307, 1180360357, 5652251635, 27729452461, 140207992699, 758880838813, 4181652023251, 23526377578933, 138205654308355, 822362988368317, 4963895328442891 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A187645. LINKS R. H. Hardin, Table of n, a(n) for n = 1..23 EXAMPLE Some solutions for 4 X 6 ..0..1..1..0..0..2....0..2..0..0..2..0....0..1..2..0..0..2....0..2..1..1..2..0 ..0..1..1..1..2..2....0..1..1..2..2..2....0..0..1..1..2..1....0..1..2..0..1..2 ..2..1..2..1..1..0....2..1..2..0..0..1....2..1..2..1..0..2....1..2..0..0..2..1 ..0..1..1..0..0..2....1..0..1..1..0..1....2..1..0..2..0..0....1..0..2..2..0..1 CROSSREFS Cf. A187645. Sequence in context: A232361 A236736 A205270 * A283956 A151435 A143910 Adjacent sequences: A187640 A187641 A187642 * A187644 A187645 A187646 KEYWORD nonn AUTHOR R. H. Hardin Mar 12 2011 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 July 17 08:16 EDT 2024. Contains 374360 sequences. (Running on oeis4.)