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 A267914 Number of 3Xn 0..2 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order. 1
 5, 122, 2304, 47916, 878004, 16435188, 292341636, 5209312500, 90756319716, 1576811812500, 27101734404228, 464405881704372, 7914055449851172, 134550496512585684, 2280733479912724164, 38598223339253538036 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 3 of A267911. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 31*a(n-1) -26*a(n-2) -6768*a(n-3) +39456*a(n-4) +479232*a(n-5) -3704832*a(n-6) -12386304*a(n-7) +115867648*a(n-8) +83886080*a(n-9) -1073741824*a(n-10) for n>12 EXAMPLE Some solutions for n=4 ..0..1..2..2....0..0..1..1....0..1..2..1....0..1..0..2....0..0..1..2 ..2..0..2..2....0..2..1..0....2..0..0..2....1..1..2..2....2..2..0..0 ..0..0..1..1....0..0..2..0....2..2..0..0....1..2..2..1....2..1..2..1 CROSSREFS Cf. A267911. Sequence in context: A071171 A113906 A264456 * A282882 A208394 A320978 Adjacent sequences: A267911 A267912 A267913 * A267915 A267916 A267917 KEYWORD nonn AUTHOR R. H. Hardin, Jan 22 2016 STATUS approved

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Last modified February 22 16:01 EST 2024. Contains 370256 sequences. (Running on oeis4.)