A143956 - cp's OEIS frontend

A143956 Triangle read by rows, A000012 * A136521 * A000012; 1<=k<=n.

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

[1, 3, 2, 5, 4, 2, 7, 6, 4, 2, 9, 8, 6, 4, 2, 11, 10, 8, 6, 4, 2, 13, 12, 10, 8, 6, 4, 2, 15, 14, 12, 10, 8, 6, 4, 2, 17, 16, 14, 12, 10, 8, 6, 4, 2, 19, 18, 16, 14, 12, 10, 8, 6, 4, 2, 21, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2]

cp's OEIS Frontend

A143956 Triangle read by rows, A000012 * A136521 * A000012; 1<=k<=n.

Table of values

List of values

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

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

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