Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #3 Mar 31 2012 12:35:35
%S 481,25036,534816,7834644,92769304,948440084,8713467416,73822043172,
%T 587308411992,4445619331604,32329914519032
%N Number of slanted nX7 (i=1..n)X(j=i..7+i-1) 1..4 arrays with all 1s connected, all 2s connected, all 3s connected, all 4s connected, 1 in the upper left corner, 2 in the upper right corner, 3 in the lower left corner, and 4 in the lower right corner
%e One solution for n=9
%e ...1.2.2.2.2.2.2................
%e .....2.2.2.2.2.2.2..............
%e .......2.2.2.2.2.2.3............
%e .........2.2.2.2.3.3.3..........
%e ...........2.2.3.3.3.3.3........
%e .............3.3.3.3.3.3.4......
%e ...............3.3.3.3.4.4.4....
%e .................3.3.4.4.4.4.4..
%e ...................3.4.4.4.4.4.4
%K nonn
%O 2,1
%A _R. H. Hardin_ Sep 17 2009