A266937 - cp's OEIS frontend

A266937 Number of 4 X n binary arrays with rows lexicographically nondecreasing and columns lexicographically nondecreasing and row sums nondecreasing and column sums nonincreasing.

n	a(n)
1	5
2	12
3	20
4	35
5	52
6	82
7	115
8	169
9	232
10	322
11	426
12	573
13	738
14	961
15	1215
16	1543
17	1912
18	2382
19	2905
20	3557
21	4280
22	5161
23	6135
24	7308
25	8594
26	10120
27	11791
28	13749
29	15883
30	18361
31	21049
32	24142
33	27490
34	31307
35	35427
36	40093
37	45111
38	50757
39	56818
40	63594
41	70848
42	78917
43	87535

[5, 12, 20, 35, 52, 82, 115, 169, 232, 322, 426, 573, 738, 961, 1215, 1543, 1912, 2382, 2905, 3557, 4280, 5161, 6135, 7308, 8594, 10120, 11791, 13749, 15883, 18361, 21049, 24142, 27490, 31307, 35427, 40093, 45111, 50757, 56818, 63594, 70848, 78917, 87535]

cp's OEIS Frontend

A266937 Number of 4 X n binary arrays with rows lexicographically nondecreasing and columns lexicographically nondecreasing and row sums nondecreasing and column sums nonincreasing.

Table of values

List of values