A211788 - cp's OEIS frontend

A211788 Triangle enumerating certain two-line arrays of positive integers.

n	a(n)
1	1
2	1
3	1
4	1
5	4
6	4
7	1
8	7
9	21
10	21
11	1
12	10
13	47
14	126
15	126
16	1
17	13
18	82
19	324
20	818
21	818
22	1
23	16
24	126
25	642
26	2300
27	5594
28	5594
29	1
30	19
31	179
32	1107
33	4977
34	16741
35	39693
36	39693
37	1
38	22
39	241
40	1746
41	9335
42	38642
43	124383
44	289510
45	289510
46	1
47	25
48	312
49	2586
50	15941
51	77273
52	301630
53	939880
54	2157150
55	2157150

[1, 1, 1, 1, 4, 4, 1, 7, 21, 21, 1, 10, 47, 126, 126, 1, 13, 82, 324, 818, 818, 1, 16, 126, 642, 2300, 5594, 5594, 1, 19, 179, 1107, 4977, 16741, 39693, 39693, 1, 22, 241, 1746, 9335, 38642, 124383, 289510, 289510, 1, 25, 312, 2586, 15941, 77273, 301630, 939880, 2157150, 2157150]

cp's OEIS Frontend

A211788 Triangle enumerating certain two-line arrays of positive integers.

Table of values

List of values