Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its northwest or southwest neighbor modulo 4 and the upper left element equal to 0.
A266574
Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its northwest or southwest neighbor modulo 4 and the upper left element equal to 0.
Terms
- a(0) =6a(1) =74a(2) =2320a(3) =77830a(4) =2595190a(5) =94930586a(6) =3708826784a(7) =148879349035
External references
- oeis: A266574