Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its north, southwest or northwest neighbor modulo 4 and the upper left element equal to 0.
A266880
Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its north, southwest or northwest neighbor modulo 4 and the upper left element equal to 0.
Terms
- a(0) =2a(1) =7a(2) =76a(3) =943a(4) =12549a(5) =205452a(6) =3751651a(7) =72345624a(8) =1439333469a(9) =29337850346a(10) =606171318095
External references
- oeis: A266880