Number of slanted 4Xn (i=1..4)X(j=i..n+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.

A165387

Number of slanted 4Xn (i=1..4)X(j=i..n+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) =5a(1) =104a(2) =1409a(3) =11960a(4) =85841a(5) =534816a(6) =3017385a(7) =15787165a(8) =77891237a(9) =366749318a(10) =1662432947a(11) =7302379696a(12) =31240817911a(13) =130688934607a(14) =536275945765

External references