A219682 - cp's OEIS frontend

A219682 Number of n X 4 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 n X 4 array.

n	a(n)
1	10
2	14
3	87
4	427
5	1688
6	5726
7	18486
8	59458
9	189516
10	589078
11	1771979
12	5155016
13	14529474
14	39751677
15	105748979
16	273953703
17	692141498
18	1707798168
19	4120669743
20	9734318169
21	22538154434
22	51195509983
23	114191870360
24	250314850722

[10, 14, 87, 427, 1688, 5726, 18486, 59458, 189516, 589078, 1771979, 5155016, 14529474, 39751677, 105748979, 273953703, 692141498, 1707798168, 4120669743, 9734318169, 22538154434, 51195509983, 114191870360, 250314850722]

cp's OEIS Frontend

A219682 Number of n X 4 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 n X 4 array.

Table of values

List of values