Number of 3 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..2 3 X n array.
A219596
Number of 3 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..2 3 X n array.
Terms
- a(0) =6a(1) =21a(2) =84a(3) =233a(4) =550a(5) =1188a(6) =2415a(7) =4684a(8) =8746a(9) =15833a(10) =27945a(11) =48286a(12) =81907a(13) =136629a(14) =224336a(15) =362747a(16) =577797a(17) =906780a(18) =1402432a(19) =2138159a(20) =3214644a(21) =4768098a(22) =6980453a(23) =10091830a(24) =14415652a(25) =20356811a(26) =28433339a(27) =39302076a(28) =53788873a(29) =72923915
External references
- oeis: A219596