A219596 - cp's OEIS frontend

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.

n	a(n)
1	6
2	21
3	84
4	233
5	550
6	1188
7	2415
8	4684
9	8746
10	15833
11	27945
12	48286
13	81907
14	136629
15	224336
16	362747
17	577797
18	906780
19	1402432
20	2138159
21	3214644
22	4768098
23	6980453
24	10091830
25	14415652
26	20356811
27	28433339
28	39302076
29	53788873
30	72923915
31	97982798

[6, 21, 84, 233, 550, 1188, 2415, 4684, 8746, 15833, 27945, 48286, 81907, 136629, 224336, 362747, 577797, 906780, 1402432, 2138159, 3214644, 4768098, 6980453, 10091830, 14415652, 20356811, 28433339, 39302076, 53788873, 72923915, 97982798]

cp's OEIS Frontend

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.

Table of values

List of values