A134234 - cp's OEIS frontend

A134234 Triangle read by rows, n-th row = n terms of 2n, 2n+2, 2n+4, ..., 1; with a(1) = 1.

n	a(n)
1	1
2	4
3	1
4	6
5	8
6	1
7	8
8	10
9	12
10	1
11	10
12	12
13	14
14	16
15	1
16	12
17	14
18	16
19	18
20	20
21	1
22	14
23	16
24	18
25	20
26	22
27	24
28	1
29	16
30	18
31	20
32	22
33	24
34	26
35	28
36	1
37	18
38	20
39	22
40	24
41	26
42	28
43	30
44	32
45	1
46	20
47	22
48	24
49	26
50	28
51	30
52	32
53	34
54	36
55	1

[1, 4, 1, 6, 8, 1, 8, 10, 12, 1, 10, 12, 14, 16, 1, 12, 14, 16, 18, 20, 1, 14, 16, 18, 20, 22, 24, 1, 16, 18, 20, 22, 24, 26, 28, 1, 18, 20, 22, 24, 26, 28, 30, 32, 1, 20, 22, 24, 26, 28, 30, 32, 34, 36, 1]

cp's OEIS Frontend

A134234 Triangle read by rows, n-th row = n terms of 2n, 2n+2, 2n+4, ..., 1; with a(1) = 1.

Table of values

List of values

n	a(n)
1	1
2	4
3	1
4	6
5	8
6	1
7	8
8	10
9	12
10	1
11	10
12	12
13	14
14	16
15	1
16	12
17	14
18	16
19	18
20	20
21	1
22	14
23	16
24	18
25	20
26	22
27	24
28	1
29	16
30	18
31	20
32	22
33	24
34	26
35	28
36	1
37	18
38	20
39	22
40	24
41	26
42	28
43	30
44	32
45	1
46	20
47	22
48	24
49	26
50	28
51	30
52	32
53	34
54	36
55	1

n	a(n)
1	1
2	4
3	1
4	6
5	8
6	1
7	8
8	10
9	12
10	1
11	10
12	12
13	14
14	16
15	1
16	12
17	14
18	16
19	18
20	20
21	1
22	14
23	16
24	18
25	20
26	22
27	24
28	1
29	16
30	18
31	20
32	22
33	24
34	26
35	28
36	1
37	18
38	20
39	22
40	24
41	26
42	28
43	30
44	32
45	1
46	20
47	22
48	24
49	26
50	28
51	30
52	32
53	34
54	36
55	1

n	a(n)
1	1
2	4
3	1
4	6
5	8
6	1
7	8
8	10
9	12
10	1
11	10
12	12
13	14
14	16
15	1
16	12
17	14
18	16
19	18
20	20
21	1
22	14
23	16
24	18
25	20
26	22
27	24
28	1
29	16
30	18
31	20
32	22
33	24
34	26
35	28
36	1
37	18
38	20
39	22
40	24
41	26
42	28
43	30
44	32
45	1
46	20
47	22
48	24
49	26
50	28
51	30
52	32
53	34
54	36
55	1