T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 nXk array.
A219217
T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 nXk array.
Terms
- a(0) =3a(1) =3a(2) =3a(3) =6a(4) =3a(5) =6a(6) =10a(7) =7a(8) =7a(9) =10a(10) =15a(11) =12a(12) =37a(13) =12a(14) =15a(15) =21a(16) =21a(17) =113a(18) =113a(19) =21a(20) =21a(21) =28a(22) =35a(23) =345a(24) =493a(25) =345a(26) =35a(27) =28a(28) =36a(29) =57
External references
- oeis: A219217