A293821 - cp's OEIS frontend

A293821 Number of integer-sided quadrilaterals having perimeter n, modulo rotations but not reflections.

n	a(n)
4	1
5	1
6	2
7	4
8	6
9	10
10	12
11	20
12	23
13	35
14	38
15	56
16	60
17	84
18	88
19	120
20	125
21	165
22	170
23	220
24	226
25	286
26	292
27	364
28	371
29	455
30	462
31	560
32	568
33	680
34	688
35	816
36	825
37	969
38	978
39	1140
40	1150
41	1330
42	1340
43	1540
44	1551
45	1771
46	1782
47	2024
48	2036
49	2300
50	2312
51	2600
52	2613
53	2925
54	2938
55	3276
56	3290
57	3654
58	3668
59	4060

[1, 1, 2, 4, 6, 10, 12, 20, 23, 35, 38, 56, 60, 84, 88, 120, 125, 165, 170, 220, 226, 286, 292, 364, 371, 455, 462, 560, 568, 680, 688, 816, 825, 969, 978, 1140, 1150, 1330, 1340, 1540, 1551, 1771, 1782, 2024, 2036, 2300, 2312, 2600, 2613, 2925, 2938, 3276, 3290, 3654, 3668, 4060]

cp's OEIS Frontend

A293821 Number of integer-sided quadrilaterals having perimeter n, modulo rotations but not reflections.

Table of values

List of values