Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its north, west, northeast or southeast neighbor modulo 4 and the upper left element equal to 0.
A266855
Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its north, west, northeast or southeast neighbor modulo 4 and the upper left element equal to 0.
Terms
- a(0) =2a(1) =6a(2) =44a(3) =438a(4) =4156a(5) =49033a(6) =588632a(7) =8351513a(8) =113609298a(9) =1770032098a(10) =26096782411a(11) =426735882363
External references
- oeis: A266855