Number of nX3 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX3 array.
A219709
Number of nX3 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX3 array.
Terms
- a(0) =10a(1) =45a(2) =297a(3) =1860a(4) =9674a(5) =46026a(6) =207161a(7) =881386a(8) =3529403a(9) =13308249a(10) =47441049a(11) =160715914a(12) =520052472a(13) =1614574538a(14) =4827357204a(15) =13942039190a(16) =38993642992a(17) =105830455516a(18) =279212564425a(19) =717166808833
External references
- oeis: A219709