A233985 - OEIS

A233985

Number of (n+1)X(4+1) 0..4 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 10, and no two adjacent values equal

%I #5 Aug 11 2014 22:45:57

%S 4064,62040,914000,14319916,218943540,3423714364,52813238148,

%T 823369058112,12742490550076,198298730064604,3073521685701812,

%U 47782924139864764,741186721423015216,11516722220527152504

%N Number of (n+1)X(4+1) 0..4 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 10, and no two adjacent values equal

%C Column 4 of A233989

%H R. H. Hardin, <a href="/A233985/b233985.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A233985/a233985.txt">Empirical recurrence of order 78</a>

%F Empirical recurrence of order 78 (see link above)

%e Some solutions for n=2

%e ..2..3..1..2..1....3..1..2..1..0....3..2..0..2..4....0..2..3..1..3

%e ..4..2..3..4..2....4..2..4..3..1....1..3..2..1..3....1..0..1..2..1

%e ..2..3..1..2..3....3..4..3..1..0....0..2..0..2..1....0..2..3..4..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 18 2013