1/120 the number of n X 4 arrays of integers in 1..6 with no element or any of its neighbors having the same value.

A180375

1/120 the number of n X 4 arrays of integers in 1..6 with no element or any of its neighbors having the same value.

Terms

    a(0) =4a(1) =147a(2) =1236a(3) =11586a(4) =100704a(5) =909780a(6) =8061360a(7) =72279888a(8) =644409672a(9) =5763665256a(10) =51460343508a(11) =459865182720

External references