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 A237011 Number of (n+1)X(4+1) 0..3 arrays with the sum of all four elements of every 2X2 subblock equal 1
 5984, 10776, 20776, 46416, 108824, 282048, 755752, 2169408, 6387224, 19785696, 62577256, 205965696, 689940824, 2386495968, 8375807272, 30155605248, 109803847064, 407743384416, 1526506024936, 5798829806976, 22150030731224 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A237015 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 8*a(n-1) +16*a(n-2) -268*a(n-3) +189*a(n-4) +3388*a(n-5) -5824*a(n-6) -20048*a(n-7) +49756*a(n-8) +52752*a(n-9) -196896*a(n-10) -24192*a(n-11) +369216*a(n-12) -131328*a(n-13) -262656*a(n-14) +165888*a(n-15) EXAMPLE Some solutions for n=5 ..0..3..1..2..1....2..1..1..2..3....2..2..2..1..1....2..0..3..1..3 ..3..2..2..3..2....2..1..3..0..1....1..1..1..2..2....3..2..2..1..2 ..0..3..1..2..1....2..1..1..2..3....2..2..2..1..1....0..2..1..3..1 ..3..2..2..3..2....2..1..3..0..1....2..0..2..1..3....3..2..2..1..2 ..1..2..2..1..2....2..1..1..2..3....1..3..1..2..0....1..1..2..2..2 ..3..2..2..3..2....2..1..3..0..1....2..0..2..1..3....3..2..2..1..2 CROSSREFS Sequence in context: A176374 A282191 A328327 * A274362 A233871 A182295 Adjacent sequences:  A237008 A237009 A237010 * A237012 A237013 A237014 KEYWORD nonn AUTHOR R. H. Hardin, Feb 02 2014 STATUS approved

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Last modified December 5 12:24 EST 2021. Contains 349557 sequences. (Running on oeis4.)