A220148 - cp's OEIS frontend

A220148 Number of n X 3 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 3 array.

n	a(n)
1	6
2	23
3	77
4	242
5	727
6	2062
7	5493
8	13773
9	32664
10	73654
11	158660
12	327852
13	652215
14	1253089
15	2331716
16	4212805
17	7407330
18	12701233
19	21278447
20	34888718
21	56073127
22	88463032
23	137171407
24	209299293
25	314584340
26	466223256
27	681905438
28	985101192

[6, 23, 77, 242, 727, 2062, 5493, 13773, 32664, 73654, 158660, 327852, 652215, 1253089, 2331716, 4212805, 7407330, 12701233, 21278447, 34888718, 56073127, 88463032, 137171407, 209299293, 314584340, 466223256, 681905438, 985101192]

cp's OEIS Frontend

A220148 Number of n X 3 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 3 array.

Table of values

List of values