Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its north or northeast neighbor modulo 4 and the upper left element equal to 0.
A266601
Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its north or northeast neighbor modulo 4 and the upper left element equal to 0.
Terms
- a(0) =2a(1) =38a(2) =964a(3) =30637a(4) =1073367a(5) =39966856a(6) =1551883779a(7) =62152155338
External references
- oeis: A266601