login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Number of n X n 0..5 arrays with entries increasing mod 6 by 0, 1, 2 or 3 rightwards and downwards, starting with upper left zero
0

%I #5 Dec 18 2015 18:18:26

%S 1,46,17694,57455502,1579646506770,368159933254055152,

%T 727800879295716577956574

%N Number of n X n 0..5 arrays with entries increasing mod 6 by 0, 1, 2 or 3 rightwards and downwards, starting with upper left zero

%C Diagonal of A222104

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Feb 07 2013