A062890 - cp's OEIS frontend

A062890 Number of quadrilaterals that can be formed with perimeter n. In other words, number of partitions of n into four parts such that the sum of any three is more than the fourth.

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	1
6	1
7	2
8	3
9	4
10	5
11	7
12	8
13	11
14	12
15	16
16	18
17	23
18	24
19	31
20	33
21	41
22	43
23	53
24	55
25	67
26	69
27	83
28	86
29	102
30	104
31	123
32	126
33	147
34	150
35	174
36	177
37	204
38	207
39	237
40	241
41	274
42	277
43	314
44	318
45	358
46	362
47	406
48	410
49	458
50	462
51	514
52	519
53	575
54	579
55	640
56	645
57	710

[0, 0, 0, 0, 1, 1, 1, 2, 3, 4, 5, 7, 8, 11, 12, 16, 18, 23, 24, 31, 33, 41, 43, 53, 55, 67, 69, 83, 86, 102, 104, 123, 126, 147, 150, 174, 177, 204, 207, 237, 241, 274, 277, 314, 318, 358, 362, 406, 410, 458, 462, 514, 519, 575, 579, 640, 645, 710]

cp's OEIS Frontend

A062890 Number of quadrilaterals that can be formed with perimeter n. In other words, number of partitions of n into four parts such that the sum of any three is more than the fourth.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	1
6	1
7	2
8	3
9	4
10	5
11	7
12	8
13	11
14	12
15	16
16	18
17	23
18	24
19	31
20	33
21	41
22	43
23	53
24	55
25	67
26	69
27	83
28	86
29	102
30	104
31	123
32	126
33	147
34	150
35	174
36	177
37	204
38	207
39	237
40	241
41	274
42	277
43	314
44	318
45	358
46	362
47	406
48	410
49	458
50	462
51	514
52	519
53	575
54	579
55	640
56	645
57	710

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	1
6	1
7	2
8	3
9	4
10	5
11	7
12	8
13	11
14	12
15	16
16	18
17	23
18	24
19	31
20	33
21	41
22	43
23	53
24	55
25	67
26	69
27	83
28	86
29	102
30	104
31	123
32	126
33	147
34	150
35	174
36	177
37	204
38	207
39	237
40	241
41	274
42	277
43	314
44	318
45	358
46	362
47	406
48	410
49	458
50	462
51	514
52	519
53	575
54	579
55	640
56	645
57	710

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	1
6	1
7	2
8	3
9	4
10	5
11	7
12	8
13	11
14	12
15	16
16	18
17	23
18	24
19	31
20	33
21	41
22	43
23	53
24	55
25	67
26	69
27	83
28	86
29	102
30	104
31	123
32	126
33	147
34	150
35	174
36	177
37	204
38	207
39	237
40	241
41	274
42	277
43	314
44	318
45	358
46	362
47	406
48	410
49	458
50	462
51	514
52	519
53	575
54	579
55	640
56	645
57	710