cp's OEIS Frontend

A203973 Number of n X 6 0..2 arrays with every 1 immediately preceded by 0 to the left or above, and every 2 immediately preceded by 0 1 to the left or above.

%I A203973 #7 Aug 19 2022 12:20:08
%S A203973 24,1488,136243,10443081,817293052,64449537503,5061444598545,
%T A203973 397834775050740,31270867431167972,2457732853480046455,
%U A203973 193174081619843169146,15183059890219083012785,1193352525118970918791175
%N A203973 Number of n X 6 0..2 arrays with every 1 immediately preceded by 0 to the left or above, and every 2 immediately preceded by 0 1 to the left or above.
%C A203973 Column 6 of A203975.
%H A203973 R. H. Hardin, <a href="/A203973/b203973.txt">Table of n, a(n) for n = 1..210</a>
%e A203973 Some solutions for n=2
%e A203973 ..0..1..0..1..0..0....0..0..0..0..0..0....0..1..0..0..1..2....0..1..0..0..0..1
%e A203973 ..0..1..2..0..1..0....0..1..2..0..1..2....0..0..1..2..0..0....0..1..1..0..1..0
%Y A203973 Cf. A203975.
%K A203973 nonn
%O A203973 1,1
%A A203973 _R. H. Hardin_, Jan 08 2012