A265477 - OEIS

%I #4 Dec 09 2015 10:59:02

%S 125,4900,498520,128323584,4131348480,3136398496144,63552226862294,

%T 83329856800206769,483221758595102972,2349207562860745230400,

%U 10865276340207974040000,68734768761934621856452804

%N Number of nX5 0..n+5-2 arrays with upper left zero and lower right n+5-2 and each element differing from its diagonal and antidiagonal neighbors by one or two.

%C Column 5 of A265480.

%H R. H. Hardin, <a href="/A265477/b265477.txt">Table of n, a(n) for n = 1..22</a>

%e Some solutions for n=2

%e ..0..2..3..4..2....0..4..4..3..2....0..4..3..4..3....0..5..3..3..4

%e ..0..1..3..1..5....2..2..5..3..5....5..1..3..2..5....4..1..4..2..5

%Y Cf. A265480.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 09 2015