Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 4Xn array.
A219630
Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 4Xn array.
Terms
- a(0) =15a(1) =56a(2) =566a(3) =5072a(4) =37215a(5) =231634a(6) =1278800a(7) =6443507a(8) =30195206a(9) =133142378a(10) =557224292a(11) =2226287479a(12) =8525154062a(13) =31384203039a(14) =111360954329a(15) =381756818469
External references
- oeis: A219630