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..1 4Xn array.
A219775
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..1 4Xn array.
Terms
- a(0) =5a(1) =8a(2) =29a(3) =100a(4) =291a(5) =771a(6) =1887a(7) =4278a(8) =9072a(9) =18147a(10) =34592a(11) =63333a(12) =111962a(13) =191826a(14) =319428a(15) =518191a(16) =820642a(17) =1271077a(18) =1928772a(19) =2871809a(20) =4201590a(21) =6048116a(22) =8576112a(23) =11992083a(24) =16552390a(25) =22572439a(26) =30437080a(27) =40612317a(28) =53658434a(29) =70244646
External references
- oeis: A219775