Number of 2 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..3 2 X n array.
A219940
Number of 2 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..3 2 X n array.
Terms
- a(0) =10a(1) =23a(2) =64a(3) =196a(4) =459a(5) =918a(6) =1660a(7) =2802a(8) =4499a(9) =6952a(10) =10416a(11) =15208a(12) =21715a(13) =30402a(14) =41820a(15) =56614a(16) =75531a(17) =99428a(18) =129280a(19) =166188a(20) =211387a(21) =266254a(22) =332316a(23) =411258a(24) =504931a(25) =615360a(26) =744752a(27) =895504a(28) =1070211a(29) =1271674
External references
- oeis: A219940