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 A269094 Number of nX5 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once. 1
 432, 103488, 15024096, 1856325000, 211625837280, 22984646281176, 2416707037884480, 248267055360211392, 25062609875880382656, 2495854741014485439624, 245851383088389214772304 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 5 of A269097. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 236*a(n-1) -19546*a(n-2) +707906*a(n-3) -13261621*a(n-4) +137719076*a(n-5) -784626841*a(n-6) +2025590366*a(n-7) +1091882414*a(n-8) -18874661724*a(n-9) +33829878231*a(n-10) +10605114324*a(n-11) -91783964484*a(n-12) +94503314304*a(n-13) -30762353664*a(n-14) for n>15 EXAMPLE Some solutions for n=2 ..3..3..2..2..2. .0..1..0..2..2. .0..0..1..3..2. .2..2..0..1..3 ..1..3..0..2..2. .1..1..3..2..0. .1..3..3..1..3. .3..2..1..1..3 CROSSREFS Cf. A269097. Sequence in context: A269149 A113921 A269211 * A269273 A300053 A047804 Adjacent sequences: A269091 A269092 A269093 * A269095 A269096 A269097 KEYWORD nonn AUTHOR R. H. Hardin, Feb 19 2016 STATUS approved

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Last modified September 17 04:43 EDT 2024. Contains 375985 sequences. (Running on oeis4.)