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Number of (n+1)X(4+1) 0..2 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both
1

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

%S 21693,2667851,306034401,35761397619,4160135051925,484500703182059,

%T 56410299169343241,6568304367121299555,764786841875168425237,

%U 89049089478506554084619,10368551123666181465422105

%N Number of (n+1)X(4+1) 0..2 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both

%C Column 4 of A235223

%H R. H. Hardin, <a href="/A235219/b235219.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A235219/a235219.txt">Empirical recurrence of order 59</a>

%F Empirical recurrence of order 59 (see link above)

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 05 2014