Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 4Xn array.
A219581
Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 4Xn array.
Terms
- a(0) =20a(1) =181a(2) =2234a(3) =18564a(4) =140884a(5) =1052190a(6) =7579137a(7) =51585784a(8) =331270888a(9) =2024909124a(10) =11885134942a(11) =67329174131a(12) =369027185265
External references
- oeis: A219581