Number of 2 X n arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 2 X n array.
A220205
Number of 2 X n arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 2 X n array.
Terms
- a(0) =4a(1) =10a(2) =36a(3) =89a(4) =182a(5) =333a(6) =567a(7) =918a(8) =1431a(9) =2164a(10) =3190a(11) =4599a(12) =6500a(13) =9023a(14) =12321a(15) =16572a(16) =21981a(17) =28782a(18) =37240a(19) =47653a(20) =60354a(21) =75713a(22) =94139a(23) =116082a(24) =142035a(25) =172536a(26) =208170a(27) =249571a(28) =297424a(29) =352467
External references
- oeis: A220205