T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 nXk array.
A219828
T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 nXk array.
Terms
- a(0) =4a(1) =4a(2) =10a(3) =10a(4) =13a(5) =20a(6) =20a(7) =38a(8) =60a(9) =35a(10) =35a(11) =87a(12) =394a(13) =193a(14) =56a(15) =56a(16) =176a(17) =2106a(18) =2673a(19) =514a(20) =84a(21) =84a(22) =370a(23) =9920a(24) =29403a(25) =16137a(26) =1231a(27) =120a(28) =120a(29) =721
External references
- oeis: A219828