A308143 - cp's OEIS frontend

A308143 Take all the integer-sided triangles with perimeter n and squarefree sides a, b, and c such that a <= b <= c. a(n) is the sum of all the b's.

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	2
7	5
8	3
9	3
10	0
11	8
12	5
13	16
14	11
15	29
16	18
17	18
18	12
19	13
20	7
21	23
22	23
23	51
24	35
25	28
26	20
27	62
28	44
29	82
30	79
31	132
32	98
33	100
34	75
35	144
36	108
37	121
38	80
39	185
40	131
41	148
42	87
43	203
44	145
45	265
46	200
47	345
48	264
49	300
50	214
51	272
52	187
53	305
54	274
55	301
56	216
57	246
58	210
59	340
60	258
61	406

[0, 0, 1, 0, 2, 2, 5, 3, 3, 0, 8, 5, 16, 11, 29, 18, 18, 12, 13, 7, 23, 23, 51, 35, 28, 20, 62, 44, 82, 79, 132, 98, 100, 75, 144, 108, 121, 80, 185, 131, 148, 87, 203, 145, 265, 200, 345, 264, 300, 214, 272, 187, 305, 274, 301, 216, 246, 210, 340, 258, 406]

cp's OEIS Frontend

A308143 Take all the integer-sided triangles with perimeter n and squarefree sides a, b, and c such that a <= b <= c. a(n) is the sum of all the b's.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	2
7	5
8	3
9	3
10	0
11	8
12	5
13	16
14	11
15	29
16	18
17	18
18	12
19	13
20	7
21	23
22	23
23	51
24	35
25	28
26	20
27	62
28	44
29	82
30	79
31	132
32	98
33	100
34	75
35	144
36	108
37	121
38	80
39	185
40	131
41	148
42	87
43	203
44	145
45	265
46	200
47	345
48	264
49	300
50	214
51	272
52	187
53	305
54	274
55	301
56	216
57	246
58	210
59	340
60	258
61	406

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	2
7	5
8	3
9	3
10	0
11	8
12	5
13	16
14	11
15	29
16	18
17	18
18	12
19	13
20	7
21	23
22	23
23	51
24	35
25	28
26	20
27	62
28	44
29	82
30	79
31	132
32	98
33	100
34	75
35	144
36	108
37	121
38	80
39	185
40	131
41	148
42	87
43	203
44	145
45	265
46	200
47	345
48	264
49	300
50	214
51	272
52	187
53	305
54	274
55	301
56	216
57	246
58	210
59	340
60	258
61	406

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	2
7	5
8	3
9	3
10	0
11	8
12	5
13	16
14	11
15	29
16	18
17	18
18	12
19	13
20	7
21	23
22	23
23	51
24	35
25	28
26	20
27	62
28	44
29	82
30	79
31	132
32	98
33	100
34	75
35	144
36	108
37	121
38	80
39	185
40	131
41	148
42	87
43	203
44	145
45	265
46	200
47	345
48	264
49	300
50	214
51	272
52	187
53	305
54	274
55	301
56	216
57	246
58	210
59	340
60	258
61	406