Number of slanted nX6 (i=1..n)X(j=i..6+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.

A165375

Number of slanted nX6 (i=1..n)X(j=i..6+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.

Terms

    a(0) =241a(1) =6868a(2) =85841a(3) =755947a(4) =5386897a(5) =33107075a(6) =182659489a(7) =930494139a(8) =4463499425a(9) =20442622131a(10) =90281206769a(11) =387257313995

External references