Number of n X n arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 n X n array.
A220028
Number of n X n arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 n X n array.
Terms
- a(0) =2a(1) =4a(2) =10a(3) =34a(4) =111a(5) =358a(6) =1165a(7) =3789a(8) =12375a(9) =40583a(10) =133632a(11) =441773
External references
- oeis: A220028