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 A237952 Number of (n+1)X(1+1) 0..3 arrays with the maximum plus the upper median plus the lower median plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
 256, 1280, 6400, 34560, 186624, 1022976, 5607424, 30916608, 170459136, 939196416, 5174788096, 28562620416, 157653467136, 868872880128, 4788604370944, 26432558333952, 145904753442816, 804133590269952, 4431869529554944 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 1 of A237956 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 976*a(n-4) -46848*a(n-8) +110592*a(n-12) EXAMPLE Some solutions for n=5 ..0..0....2..1....2..2....0..0....1..0....0..1....0..3....0..2....0..3....2..2 ..0..1....1..1....3..1....2..3....3..3....2..2....2..1....3..1....1..1....2..1 ..0..1....2..2....3..0....0..1....0..2....0..2....1..3....3..0....2..0....3..2 ..0..0....0..3....3..2....2..2....3..2....3..2....3..1....0..3....1..2....2..0 ..0..0....1..2....2..0....1..1....1..0....3..0....3..0....2..0....1..0....1..3 ..1..0....0..2....3..1....1..2....3..3....3..1....2..1....2..0....0..2....2..1 CROSSREFS Sequence in context: A237956 A237241 A120054 * A237235 A129539 A113877 Adjacent sequences: A237949 A237950 A237951 * A237953 A237954 A237955 KEYWORD nonn AUTHOR R. H. Hardin, Feb 16 2014 STATUS approved

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Last modified December 8 23:37 EST 2023. Contains 367681 sequences. (Running on oeis4.)