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

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A184452 1/36 the number of (n+2)X6 0..2 arrays with each 3X3 subblock containing two of one value, two of another, and five of the last 1
 3159, 4517, 6880, 11766, 28668, 80058, 253176, 1011114, 4109928, 16573530, 76394256, 343071594, 1473267984, 7095859362, 32986799520, 145080603426, 712092090408, 3363516907218, 14962452326376, 74120256227754 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A184457 LINKS R. H. Hardin, Table of n, a(n) for n = 1..66 FORMULA Empirical: a(n)=6*a(n-1)-11*a(n-2)+195*a(n-3)-1134*a(n-4)+2079*a(n-5)-11600*a(n-6)+62796*a(n-7)-115126*a(n-8)+263520*a(n-9)-1204344*a(n-10)+2207964*a(n-11)-2907648*a(n-12)+10219824*a(n-13)-18736344*a(n-14)+17243280*a(n-15)-42140736*a(n-16)+77258016*a(n-17)-55857600*a(n-18)+82301184*a(n-19)-150885504*a(n-20)+92378880*a(n-21)-60466176*a(n-22)+110854656*a(n-23)-60466176*a(n-24) EXAMPLE Some solutions with a(1,1)=0 for 4X6 ..0..2..1..0..2..1....0..0..2..0..1..2....0..0..2..1..2..1....0..0..2..0..2..1 ..1..0..2..1..0..0....0..2..0..1..0..0....0..2..1..0..0..2....1..2..1..0..0..2 ..0..0..0..0..0..2....1..1..0..0..2..0....1..0..0..0..0..0....0..0..0..1..0..0 ..0..1..2..0..1..2....2..0..0..2..1..0....0..0..2..1..2..1....0..0..2..0..2..1 CROSSREFS Sequence in context: A276686 A252215 A250760 * A151750 A031610 A252636 Adjacent sequences: A184449 A184450 A184451 * A184453 A184454 A184455 KEYWORD nonn AUTHOR R. H. Hardin Jan 14 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 December 7 17:25 EST 2022. Contains 358668 sequences. (Running on oeis4.)