Number of 2 X n 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 2 X n array.
A219579
Number of 2 X n 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 2 X n array.
Terms
- a(0) =4a(1) =13a(2) =51a(3) =132a(4) =277a(5) =514a(6) =881a(7) =1429a(8) =2225a(9) =3355a(10) =4927a(11) =7074a(12) =9957a(13) =13768a(14) =18733a(15) =25115a(16) =33217a(17) =43385a(18) =56011a(19) =71536a(20) =90453a(21) =113310a(22) =140713a(23) =173329a(24) =211889a(25) =257191a(26) =310103a(27) =371566a(28) =442597a(29) =524292
External references
- oeis: A219579