A229428 - cp's OEIS frontend

A229428 T(n,k) = Number of n X k 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, rows lexicographically nondecreasing, and columns lexicographically nonincreasing.

n	a(n)
1	3
2	5
3	5
4	8
5	12
6	8
7	12
8	27
9	27
10	12
11	17
12	55
13	83
14	55
15	17
16	23
17	102
18	222
19	222
20	102
21	23
22	30
23	175
24	524
25	754
26	524
27	175
28	30
29	38
30	282
31	1116
32	2204
33	2204
34	1116
35	282
36	38
37	47
38	432
39	2187
40	5700
41	7816
42	5700
43	2187
44	432
45	47
46	57
47	635
48	4005
49	13345
50	24126
51	24126
52	13345
53	4005
54	635
55	57

[3, 5, 5, 8, 12, 8, 12, 27, 27, 12, 17, 55, 83, 55, 17, 23, 102, 222, 222, 102, 23, 30, 175, 524, 754, 524, 175, 30, 38, 282, 1116, 2204, 2204, 1116, 282, 38, 47, 432, 2187, 5700, 7816, 5700, 2187, 432, 47, 57, 635, 4005, 13345, 24126, 24126, 13345, 4005, 635, 57]

cp's OEIS Frontend

A229428 T(n,k) = Number of n X k 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, rows lexicographically nondecreasing, and columns lexicographically nonincreasing.

Table of values

List of values