A201272 - cp's OEIS frontend

A201272 Number of n X 3 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

n	a(n)
0	1
1	1
2	4
3	7
4	14
5	21
6	41
7	54
8	86
9	120
10	168
11	218
12	307
13	377
14	496
15	621
16	776
17	937
18	1177
19	1380
20	1676
21	1984
22	2344
23	2716
24	3221
25	3665
26	4260
27	4875
28	5570
29	6285
30	7201
31	8026
32	9074
33	10152
34	11344
35	12566
36	14071
37	15449
38	17136
39	18865
40	20748
41	22673
42	24977
43	27112
44	29656
45	32256
46	35056

[1, 1, 4, 7, 14, 21, 41, 54, 86, 120, 168, 218, 307, 377, 496, 621, 776, 937, 1177, 1380, 1676, 1984, 2344, 2716, 3221, 3665, 4260, 4875, 5570, 6285, 7201, 8026, 9074, 10152, 11344, 12566, 14071, 15449, 17136, 18865, 20748, 22673, 24977, 27112, 29656, 32256, 35056]

cp's OEIS Frontend

A201272 Number of n X 3 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

Table of values

List of values