Number of 3 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 3 X n array.
A219941
Number of 3 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 3 X n array.
Terms
- a(0) =20a(1) =76a(2) =368a(3) =2070a(4) =8523a(5) =30558a(6) =100761a(7) =313108a(8) =921941a(9) =2585664a(10) =6949146a(11) =18004266a(12) =45195087a(13) =110356035a(14) =262913226a(15) =612588113a(16) =1398558018a(17) =3133356168a(18) =6897689403a(19) =14935630967a(20) =31839486936a(21) =66877133838a(22) =138505092333a(23) =283012794327a(24) =570884071284
External references
- oeis: A219941