A266543 - cp's OEIS frontend

A266543 Number of n X 4 binary arrays with rows and columns lexicographically nondecreasing and row and column sums nonincreasing.

n	a(n)
1	2
2	4
3	6
4	12
5	16
6	27
7	36
8	57
9	76
10	114
11	149
12	213
13	276
14	379
15	485
16	645
17	811
18	1051
19	1304
20	1652
21	2021
22	2511
23	3034
24	3709
25	4431
26	5338
27	6311
28	7510
29	8795
30	10352
31	12020
32	14010
33	16142
34	18653
35	21340
36	24469
37	27813
38	31669
39	35786
40	40492
41	45507
42	51196
43	57252
44	64073
45	71324

[2, 4, 6, 12, 16, 27, 36, 57, 76, 114, 149, 213, 276, 379, 485, 645, 811, 1051, 1304, 1652, 2021, 2511, 3034, 3709, 4431, 5338, 6311, 7510, 8795, 10352, 12020, 14010, 16142, 18653, 21340, 24469, 27813, 31669, 35786, 40492, 45507, 51196, 57252, 64073, 71324]

cp's OEIS Frontend

A266543 Number of n X 4 binary arrays with rows and columns lexicographically nondecreasing and row and column sums nonincreasing.

Table of values

List of values