A236631 - cp's OEIS frontend

A236631 Triangle read by rows: T(j,k), j>=1, k>=1, in which column k lists the positive squares repeated k-1 times, except the column 1 which is A123327. The elements of the even-indexed columns are multiplied by -1. The first element of column k is in row k(k+1)/2.

n	a(n)
1	1
2	3
3	5
4	-1
5	8
6	-1
7	10
8	-4
9	15
10	-4
11	1
12	16
13	-9
14	1
15	23
16	-9
17	1
18	25
19	-16
20	4
21	31
22	-16
23	4
24	-1
25	34
26	-25
27	4
28	-1
29	45
30	-25
31	9
32	-1
33	42
34	-36
35	9
36	-1
37	55
38	-36
39	9
40	-4
41	60
42	-49
43	16
44	-4
45	1
46	67
47	-49
48	16
49	-4
50	1
51	69
52	-64
53	16
54	-4
55	1
56	86
57	-64
58	25
59	-9
60	1
61	84
62	-81
63	25
64	-9
65	1
66	103

[1, 3, 5, -1, 8, -1, 10, -4, 15, -4, 1, 16, -9, 1, 23, -9, 1, 25, -16, 4, 31, -16, 4, -1, 34, -25, 4, -1, 45, -25, 9, -1, 42, -36, 9, -1, 55, -36, 9, -4, 60, -49, 16, -4, 1, 67, -49, 16, -4, 1, 69, -64, 16, -4, 1, 86, -64, 25, -9, 1, 84, -81, 25, -9, 1, 103]

cp's OEIS Frontend

A236631 Triangle read by rows: T(j,k), j>=1, k>=1, in which column k lists the positive squares repeated k-1 times, except the column 1 which is A123327. The elements of the even-indexed columns are multiplied by -1. The first element of column k is in row k(k+1)/2.

Table of values

List of values

n	a(n)
1	1
2	3
3	5
4	-1
5	8
6	-1
7	10
8	-4
9	15
10	-4
11	1
12	16
13	-9
14	1
15	23
16	-9
17	1
18	25
19	-16
20	4
21	31
22	-16
23	4
24	-1
25	34
26	-25
27	4
28	-1
29	45
30	-25
31	9
32	-1
33	42
34	-36
35	9
36	-1
37	55
38	-36
39	9
40	-4
41	60
42	-49
43	16
44	-4
45	1
46	67
47	-49
48	16
49	-4
50	1
51	69
52	-64
53	16
54	-4
55	1
56	86
57	-64
58	25
59	-9
60	1
61	84
62	-81
63	25
64	-9
65	1
66	103

n	a(n)
1	1
2	3
3	5
4	-1
5	8
6	-1
7	10
8	-4
9	15
10	-4
11	1
12	16
13	-9
14	1
15	23
16	-9
17	1
18	25
19	-16
20	4
21	31
22	-16
23	4
24	-1
25	34
26	-25
27	4
28	-1
29	45
30	-25
31	9
32	-1
33	42
34	-36
35	9
36	-1
37	55
38	-36
39	9
40	-4
41	60
42	-49
43	16
44	-4
45	1
46	67
47	-49
48	16
49	-4
50	1
51	69
52	-64
53	16
54	-4
55	1
56	86
57	-64
58	25
59	-9
60	1
61	84
62	-81
63	25
64	-9
65	1
66	103

n	a(n)
1	1
2	3
3	5
4	-1
5	8
6	-1
7	10
8	-4
9	15
10	-4
11	1
12	16
13	-9
14	1
15	23
16	-9
17	1
18	25
19	-16
20	4
21	31
22	-16
23	4
24	-1
25	34
26	-25
27	4
28	-1
29	45
30	-25
31	9
32	-1
33	42
34	-36
35	9
36	-1
37	55
38	-36
39	9
40	-4
41	60
42	-49
43	16
44	-4
45	1
46	67
47	-49
48	16
49	-4
50	1
51	69
52	-64
53	16
54	-4
55	1
56	86
57	-64
58	25
59	-9
60	1
61	84
62	-81
63	25
64	-9
65	1
66	103