A220147 - cp's OEIS frontend

A220147 Number of n X 2 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 n X 2 array.

n	a(n)
1	3
2	11
3	26
4	52
5	95
6	163
7	266
8	416
9	627
10	915
11	1298
12	1796
13	2431
14	3227
15	4210
16	5408
17	6851
18	8571
19	10602
20	12980
21	15743
22	18931
23	22586
24	26752
25	31475
26	36803
27	42786
28	49476
29	56927
30	65195
31	74338
32	84416
33	95491
34	107627
35	120890
36	135348
37	151071
38	168131
39	186602

[3, 11, 26, 52, 95, 163, 266, 416, 627, 915, 1298, 1796, 2431, 3227, 4210, 5408, 6851, 8571, 10602, 12980, 15743, 18931, 22586, 26752, 31475, 36803, 42786, 49476, 56927, 65195, 74338, 84416, 95491, 107627, 120890, 135348, 151071, 168131, 186602]

cp's OEIS Frontend

A220147 Number of n X 2 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 n X 2 array.

Table of values

List of values