Number of n X 4 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 n X 4 array.
A219769
Number of n X 4 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 n X 4 array.
Terms
- a(0) =4a(1) =9a(2) =33a(3) =100a(4) =283a(5) =732a(6) =1745a(7) =3881a(8) =8149a(9) =16288a(10) =31169a(11) =57354a(12) =101850a(13) =175100a(14) =292257a(15) =474791a(16) =752483a(17) =1165864a(18) =1769161a(19) =2633816a(20) =3852648a(21) =5544732a(22) =7861073a(23) =10991157a(24) =15170465a(25) =20689040a(26) =27901201a(27) =37236502a(28) =49212038a(29) =64446204
External references
- oeis: A219769