A235901 - OEIS

%I #4 Jan 16 2014 14:30:14

%S 100457,2633969,51386977,1221438401,26681279873,632701301249,

%T 14843231431681,363748742848769,9042403764456449,231698339089654529,

%U 6060781113997152769,162356984594605584641,4435208889979212623873

%N Number of (n+1)X(7+1) 0..2 arrays with the minimum plus the maximum equal to the lower median plus the upper median in every 2X2 subblock

%C Column 7 of A235902

%H R. H. Hardin, <a href="/A235901/b235901.txt">Table of n, a(n) for n = 1..206</a>

%F Empirical: a(n) = 105*a(n-1) -2912*a(n-2) -48360*a(n-3) +3284176*a(n-4) -9849840*a(n-5) -1413681152*a(n-6) +11064890880*a(n-7) +342354927616*a(n-8) -2914586849280*a(n-9) -53197229588480*a(n-10) +326026026024960*a(n-11) +5257932711133184*a(n-12) -9378006313205760*a(n-13) -253932398608121856*a(n-14) -671129571038330880*a(n-15)

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 16 2014