Number of 4Xn arrays containing n copies of 0..4-1 with every element equal to or 1 greater than any west neighbor modulo 4 and the upper left element equal to 0.
A267630
Number of 4Xn arrays containing n copies of 0..4-1 with every element equal to or 1 greater than any west neighbor modulo 4 and the upper left element equal to 0.
Terms
- a(0) =6a(1) =27a(2) =208a(3) =2386a(4) =32208a(5) =445970a(6) =6039160a(7) =80742586a(8) =1086798652a(9) =14898269746a(10) =208430268352
External references
- oeis: A267630