Number of nX3 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX3 array.
A219573
Number of nX3 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX3 array.
Terms
- a(0) =10a(1) =51a(2) =415a(3) =2234a(4) =10226a(5) =43194a(6) =175054a(7) =681294a(8) =2520724a(9) =8826995a(10) =29312128a(11) =92766392a(12) =281352528a(13) =821894587a(14) =2322377790a(15) =6369721171a(16) =17006832588a(17) =44306213351a(18) =112846664535a(19) =281447430087a(20) =688297677269
External references
- oeis: A219573