Number of nX2 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 nX2 array.
A219933
Number of nX2 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 nX2 array.
Terms
- a(0) =4a(1) =23a(2) =76a(3) =208a(4) =519a(5) =1212a(6) =2670a(7) =5574a(8) =11076a(9) =21043a(10) =38390a(11) =67522a(12) =114907a(13) =189804a(14) =305172a(15) =478788a(16) =734604a(17) =1104375a(18) =1629592a(19) =2363756a(20) =3375031a(21) =4749316a(22) =6593778a(23) =9040890a(24) =12253020a(25) =16427619a(26) =21803058a(27) =28665166a(28) =37354523a(29) =48274564
External references
- oeis: A219933