A057887 - cp's OEIS frontend

A057887 Number of 4-tuples of integers with GCD=1 and giving the lengths of sides of a nondegenerate quadrilateral with perimeter n.

n	a(n)
1	0
2	0
3	0
4	1
5	1
6	2
7	3
8	4
9	7
10	8
11	13
12	13
13	22
14	22
15	33
16	33
17	50
18	45
19	70
20	65
21	92
22	87
23	125
24	111
25	160
26	145
27	196
28	184
29	252
30	215
31	308
32	278
33	359
34	330
35	440
36	385
37	525
38	464
39	593
40	546
41	715
42	606
43	825
44	735
45	905
46	832
47	1078
48	926
49	1219
50	1065
51	1328
52	1223
53	1547
54	1310
55	1715
56	1529
57	1855

[0, 0, 0, 1, 1, 2, 3, 4, 7, 8, 13, 13, 22, 22, 33, 33, 50, 45, 70, 65, 92, 87, 125, 111, 160, 145, 196, 184, 252, 215, 308, 278, 359, 330, 440, 385, 525, 464, 593, 546, 715, 606, 825, 735, 905, 832, 1078, 926, 1219, 1065, 1328, 1223, 1547, 1310, 1715, 1529, 1855]

cp's OEIS Frontend

A057887 Number of 4-tuples of integers with GCD=1 and giving the lengths of sides of a nondegenerate quadrilateral with perimeter n.

Table of values

List of values