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 A198252 Number of 2nX14 0..4 arrays with values 0..4 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors 0
 187, 1268648, 10164141586, 84165911962889, 704825868750085006 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 7 of A198253 LINKS Table of n, a(n) for n=1..5. EXAMPLE A solution for n=3 ..0..0..0..0..0..0..1..1..1..1..2..2..3..3 ..0..1..1..1..1..0..1..4..4..1..2..2..3..3 ..0..1..0..0..1..0..1..4..4..1..4..4..2..2 ..0..1..0..0..1..0..1..1..1..1..4..4..2..2 ..0..1..1..1..1..0..3..3..0..0..2..2..0..0 ..0..0..0..0..0..0..3..3..0..0..2..2..0..0 CROSSREFS Sequence in context: A208406 A208413 A198905 * A070257 A204750 A015986 Adjacent sequences: A198249 A198250 A198251 * A198253 A198254 A198255 KEYWORD nonn AUTHOR R. H. Hardin Oct 22 2011 STATUS approved

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Last modified August 13 14:10 EDT 2024. Contains 375142 sequences. (Running on oeis4.)