Number of n X 3 arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX3 array.
A220039
Number of n X 3 arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX3 array.
Terms
- a(0) =10a(1) =25a(2) =184a(3) =927a(4) =4415a(5) =19083a(6) =79295a(7) =321566a(8) =1259568a(9) =4717825a(10) =16857776a(11) =57606698a(12) =189020066a(13) =597912638a(14) =1829586732a(15) =5430748522a(16) =15671204978a(17) =44036228316a(18) =120655436611a(19) =322669774355a(20) =842965290520
External references
- oeis: A220039