A138057 - cp's OEIS frontend

A138057 Triangle read by rows: row n consists of 0 followed by n (n+1)'s with alternating signs.

n	a(n)
0	0
1	0
2	-2
3	0
4	-3
5	3
6	0
7	-4
8	4
9	-4
10	0
11	-5
12	5
13	-5
14	5
15	0
16	-6
17	6
18	-6
19	6
20	-6
21	0
22	-7
23	7
24	-7
25	7
26	-7
27	7
28	0
29	-8
30	8
31	-8
32	8
33	-8
34	8
35	-8
36	0
37	-9
38	9
39	-9
40	9
41	-9
42	9
43	-9
44	9
45	0
46	-10
47	10
48	-10
49	10
50	-10
51	10
52	-10
53	10
54	-10

[0, 0, -2, 0, -3, 3, 0, -4, 4, -4, 0, -5, 5, -5, 5, 0, -6, 6, -6, 6, -6, 0, -7, 7, -7, 7, -7, 7, 0, -8, 8, -8, 8, -8, 8, -8, 0, -9, 9, -9, 9, -9, 9, -9, 9, 0, -10, 10, -10, 10, -10, 10, -10, 10, -10]

cp's OEIS Frontend

A138057 Triangle read by rows: row n consists of 0 followed by n (n+1)'s with alternating signs.

Table of values

List of values

n	a(n)
0	0
1	0
2	-2
3	0
4	-3
5	3
6	0
7	-4
8	4
9	-4
10	0
11	-5
12	5
13	-5
14	5
15	0
16	-6
17	6
18	-6
19	6
20	-6
21	0
22	-7
23	7
24	-7
25	7
26	-7
27	7
28	0
29	-8
30	8
31	-8
32	8
33	-8
34	8
35	-8
36	0
37	-9
38	9
39	-9
40	9
41	-9
42	9
43	-9
44	9
45	0
46	-10
47	10
48	-10
49	10
50	-10
51	10
52	-10
53	10
54	-10

n	a(n)
0	0
1	0
2	-2
3	0
4	-3
5	3
6	0
7	-4
8	4
9	-4
10	0
11	-5
12	5
13	-5
14	5
15	0
16	-6
17	6
18	-6
19	6
20	-6
21	0
22	-7
23	7
24	-7
25	7
26	-7
27	7
28	0
29	-8
30	8
31	-8
32	8
33	-8
34	8
35	-8
36	0
37	-9
38	9
39	-9
40	9
41	-9
42	9
43	-9
44	9
45	0
46	-10
47	10
48	-10
49	10
50	-10
51	10
52	-10
53	10
54	-10

n	a(n)
0	0
1	0
2	-2
3	0
4	-3
5	3
6	0
7	-4
8	4
9	-4
10	0
11	-5
12	5
13	-5
14	5
15	0
16	-6
17	6
18	-6
19	6
20	-6
21	0
22	-7
23	7
24	-7
25	7
26	-7
27	7
28	0
29	-8
30	8
31	-8
32	8
33	-8
34	8
35	-8
36	0
37	-9
38	9
39	-9
40	9
41	-9
42	9
43	-9
44	9
45	0
46	-10
47	10
48	-10
49	10
50	-10
51	10
52	-10
53	10
54	-10