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A237102 Number of (n+1)X(2+1) 0..2 arrays with the maximum minus the upper median of every 2X2 subblock equal 1

%I

%S 385,3787,39235,435113,4975145,58074637,685334343,8138935643,

%T 96985032775,1157886143543,13837852902565,165468874704391,

%U 1979225480289719,23678093331580255,283293856876960553,3389604656842346969

%N Number of (n+1)X(2+1) 0..2 arrays with the maximum minus the upper median of every 2X2 subblock equal

%C Column 2 of A237108

%H R. H. Hardin, <a href="/A237102/b237102.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 27*a(n-1) -199*a(n-2) -477*a(n-3) +11775*a(n-4) -34928*a(n-5) -115926*a(n-6) +725374*a(n-7) -204577*a(n-8) -4749380*a(n-9) +6666884*a(n-10) +11629260*a(n-11) -27768844*a(n-12) -8069720*a(n-13) +48967980*a(n-14) -8687056*a(n-15) -41849680*a(n-16) +14177792*a(n-17) +17748896*a(n-18) -5169888*a(n-19) -4051136*a(n-20) +354688*a(n-21) +378816*a(n-22) +40320*a(n-23)

%e Some solutions for n=3

%e ..0..1..0....2..2..2....1..2..2....1..0..2....1..0..0....0..2..2....2..2..2

%e ..1..0..1....1..1..1....0..2..1....2..2..1....1..0..0....1..2..2....2..2..1

%e ..2..2..2....0..1..1....0..2..2....2..2..0....2..2..2....2..2..1....2..2..2

%e ..2..1..0....1..0..0....2..1..2....2..2..0....2..1..1....1..1..2....2..2..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 03 2014

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Last modified October 21 17:37 EDT 2021. Contains 348155 sequences. (Running on oeis4.)