Number of 3Xn 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..3 3Xn array.
A219473
Number of 3Xn 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..3 3Xn array.
Terms
- a(0) =20a(1) =82a(2) =673a(3) =4838a(4) =28159a(5) =143718a(6) =674954a(7) =2941342a(8) =11981143a(9) =45898940a(10) =166443227a(11) =574474013a(12) =1895549798a(13) =6001932167a(14) =18298398284a(15) =53884690148a(16) =153709998598a(17) =425853237243
External references
- oeis: A219473