The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons 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 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A231339 Number of (n+1)X(3+1) 0..3 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with values 0..3 introduced in row major order 1
 7, 22, 96, 453, 2302, 12052, 65326, 358429, 1989453, 11087559, 62022945, 347395505, 1948118084, 10928901807, 61334491446, 344258620897, 1932496326979, 10848464120753, 60902512055626, 341906150989889, 1919482880527468 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A231343 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 15*a(n-1) -76*a(n-2) +89*a(n-3) +558*a(n-4) -2475*a(n-5) +4307*a(n-6) -3342*a(n-7) -657*a(n-8) +4329*a(n-9) -2777*a(n-10) -1516*a(n-11) -5181*a(n-12) +29973*a(n-13) -62025*a(n-14) +78104*a(n-15) -71064*a(n-16) +39440*a(n-17) +20165*a(n-18) -62303*a(n-19) +136788*a(n-20) -263265*a(n-21) +276773*a(n-22) -233086*a(n-23) +162331*a(n-24) +11505*a(n-25) -92651*a(n-26) +60838*a(n-27) -39569*a(n-28) +14575*a(n-29) -827*a(n-30) +128*a(n-31) +771*a(n-32) -9*a(n-33) +135*a(n-34) EXAMPLE Some solutions for n=6 ..0..0..1..1....0..0..1..1....0..0..1..1....0..0..0..0....0..1..1..0 ..0..0..1..1....0..0..1..1....0..0..1..1....1..1..2..2....0..1..1..0 ..0..0..1..1....2..2..2..2....1..1..1..1....1..1..2..2....0..0..0..0 ..1..1..1..1....2..2..2..2....1..1..0..0....0..0..0..0....2..2..1..1 ..1..1..2..2....3..3..2..2....2..2..0..0....0..0..0..0....2..2..1..1 ..3..3..2..2....3..3..3..3....2..2..2..0....0..0..3..3....2..2..3..3 ..3..3..3..3....3..3..3..3....2..2..2..0....3..3..3..3....3..3..3..3 CROSSREFS Sequence in context: A305083 A231214 A041913 * A222178 A117110 A027838 Adjacent sequences:  A231336 A231337 A231338 * A231340 A231341 A231342 KEYWORD nonn AUTHOR R. H. Hardin, Nov 07 2013 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 December 3 04:22 EST 2021. Contains 349445 sequences. (Running on oeis4.)