A235977 - OEIS

%I #5 Aug 11 2014 22:46:08

%S 3741,89555,1947197,46727365,1101519021,26513929449,636000634655,

%T 15322368309233,368889441554023,8889119296332995,214171250506380939,

%U 5161137430892686227,124370527249999193137,2997137255815847180323

%N Number of (n+1)X(4+1) 0..2 arrays with the upper median equal to the lower median in every 2X2 subblock

%C Column 4 of A235981

%H R. H. Hardin, <a href="/A235977/b235977.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A235977/a235977.txt">Empirical recurrence of order 61</a>

%F Empirical recurrence of order 61 (see link above)

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 17 2014