A069906 - cp's OEIS frontend

A069906 Number of pentagons that can be formed with perimeter n. In other words, number of partitions of n into five parts such that the sum of any four is more than the fifth.

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	1
6	1
7	2
8	2
9	4
10	5
11	8
12	9
13	14
14	16
15	23
16	25
17	35
18	39
19	52
20	57
21	74
22	81
23	103
24	111
25	139
26	150
27	184
28	197
29	239
30	256
31	306
32	325
33	385
34	409
35	480
36	507
37	590
38	623
39	719
40	756
41	867
42	911
43	1038
44	1087
45	1232
46	1289
47	1453
48	1516
49	1701
50	1774
51	1981
52	2061
53	2293

[0, 0, 0, 0, 0, 1, 1, 2, 2, 4, 5, 8, 9, 14, 16, 23, 25, 35, 39, 52, 57, 74, 81, 103, 111, 139, 150, 184, 197, 239, 256, 306, 325, 385, 409, 480, 507, 590, 623, 719, 756, 867, 911, 1038, 1087, 1232, 1289, 1453, 1516, 1701, 1774, 1981, 2061, 2293]

cp's OEIS Frontend

A069906 Number of pentagons that can be formed with perimeter n. In other words, number of partitions of n into five parts such that the sum of any four is more than the fifth.

Table of values

List of values