cp's OEIS Frontend

A222335 Number of nX2 0..6 arrays with no entry increasing mod 7 by 6 rightwards or downwards, starting with upper left zero.

%I A222335 #7 Jul 23 2025 02:30:09
%S A222335 6,186,5766,178746,5541126,171774906,5325022086,165075684666,
%T A222335 5117346224646,158637732964026,4917769721884806,152450861378428986,
%U A222335 4725976702731298566,146505277784670255546,4541663611324777921926
%N A222335 Number of nX2 0..6 arrays with no entry increasing mod 7 by 6 rightwards or downwards, starting with upper left zero.
%C A222335 Column 2 of A222340
%H A222335 R. H. Hardin, <a href="/A222335/b222335.txt">Table of n, a(n) for n = 1..210</a>
%F A222335 Empirical: a(n) = 31*a(n-1)
%e A222335 Some solutions for n=3
%e A222335 ..0..4....0..4....0..1....0..3....0..4....0..0....0..4....0..1....0..3....0..0
%e A222335 ..1..6....3..1....5..3....5..1....5..6....3..3....1..5....3..5....0..3....3..3
%e A222335 ..3..0....5..5....5..1....1..2....5..1....0..0....4..6....5..1....1..6....5..0
%K A222335 nonn
%O A222335 1,1
%A A222335 _R. H. Hardin_ Feb 15 2013