A219589 - cp's OEIS frontend

A219589 Number of n X 2 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 n X 2 array.

n	a(n)
1	3
2	7
3	21
4	46
5	87
6	151
7	247
8	386
9	581
10	847
11	1201
12	1662
13	2251
14	2991
15	3907
16	5026
17	6377
18	7991
19	9901
20	12142
21	14751
22	17767
23	21231
24	25186
25	29677
26	34751
27	40457
28	46846
29	53971
30	61887
31	70651
32	80322
33	90961
34	102631
35	115397
36	129326
37	144487
38	160951
39	178791

[3, 7, 21, 46, 87, 151, 247, 386, 581, 847, 1201, 1662, 2251, 2991, 3907, 5026, 6377, 7991, 9901, 12142, 14751, 17767, 21231, 25186, 29677, 34751, 40457, 46846, 53971, 61887, 70651, 80322, 90961, 102631, 115397, 129326, 144487, 160951, 178791]

cp's OEIS Frontend

A219589 Number of n X 2 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 n X 2 array.

Table of values

List of values