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 nonincreasing columns, 0..2 nXk array.
A219915
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 nonincreasing columns, 0..2 nXk array.
Terms
- a(0) =3a(1) =3a(2) =3a(3) =6a(4) =3a(5) =6a(6) =10a(7) =6a(8) =7a(9) =10a(10) =15a(11) =10a(12) =24a(13) =12a(14) =15a(15) =21a(16) =15a(17) =64a(18) =62a(19) =21a(20) =21a(21) =28a(22) =21a(23) =147a(24) =234a(25) =155a(26) =35a(27) =28a(28) =36a(29) =28
External references
- oeis: A219915