A220149 - cp's OEIS frontend

A220149 Number of nX4 arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 nX4 array.

n	a(n)
1	10
2	50
3	254
4	1174
5	5410
6	24684
7	108169
8	448881
9	1761976
10	6564622
11	23314449
12	79243936
13	258638752
14	812875058
15	2465906695
16	7234818015
17	20565976895
18	56733702403
19	152106586332
20	396892051129
21	1009207780356
22	2503839951948

[10, 50, 254, 1174, 5410, 24684, 108169, 448881, 1761976, 6564622, 23314449, 79243936, 258638752, 812875058, 2465906695, 7234818015, 20565976895, 56733702403, 152106586332, 396892051129, 1009207780356, 2503839951948]

cp's OEIS Frontend

A220149 Number of nX4 arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 nX4 array.

Table of values

List of values