A257232 - cp's OEIS frontend

A257232 Triangle T(n, k) with the natural numbers in columns with nonprime k and the nonnegative numbers in columns with prime k, for 1 <= k <= n.

n	a(n)
1	1
2	2
3	0
4	3
5	1
6	0
7	4
8	2
9	1
10	1
11	5
12	3
13	2
14	2
15	0
16	6
17	4
18	3
19	3
20	1
21	1
22	7
23	5
24	4
25	4
26	2
27	2
28	0
29	8
30	6
31	5
32	5
33	3
34	3
35	1
36	1
37	9
38	7
39	6
40	6
41	4
42	4
43	2
44	2
45	1
46	10
47	8
48	7
49	7
50	5
51	5
52	3
53	3
54	2
55	1
56	11
57	9
58	8
59	8
60	6
61	6
62	4
63	4
64	3
65	2
66	0

[1, 2, 0, 3, 1, 0, 4, 2, 1, 1, 5, 3, 2, 2, 0, 6, 4, 3, 3, 1, 1, 7, 5, 4, 4, 2, 2, 0, 8, 6, 5, 5, 3, 3, 1, 1, 9, 7, 6, 6, 4, 4, 2, 2, 1, 10, 8, 7, 7, 5, 5, 3, 3, 2, 1, 11, 9, 8, 8, 6, 6, 4, 4, 3, 2, 0]

cp's OEIS Frontend

A257232 Triangle T(n, k) with the natural numbers in columns with nonprime k and the nonnegative numbers in columns with prime k, for 1 <= k <= n.

Table of values

List of values

n	a(n)
1	1
2	2
3	0
4	3
5	1
6	0
7	4
8	2
9	1
10	1
11	5
12	3
13	2
14	2
15	0
16	6
17	4
18	3
19	3
20	1
21	1
22	7
23	5
24	4
25	4
26	2
27	2
28	0
29	8
30	6
31	5
32	5
33	3
34	3
35	1
36	1
37	9
38	7
39	6
40	6
41	4
42	4
43	2
44	2
45	1
46	10
47	8
48	7
49	7
50	5
51	5
52	3
53	3
54	2
55	1
56	11
57	9
58	8
59	8
60	6
61	6
62	4
63	4
64	3
65	2
66	0

n	a(n)
1	1
2	2
3	0
4	3
5	1
6	0
7	4
8	2
9	1
10	1
11	5
12	3
13	2
14	2
15	0
16	6
17	4
18	3
19	3
20	1
21	1
22	7
23	5
24	4
25	4
26	2
27	2
28	0
29	8
30	6
31	5
32	5
33	3
34	3
35	1
36	1
37	9
38	7
39	6
40	6
41	4
42	4
43	2
44	2
45	1
46	10
47	8
48	7
49	7
50	5
51	5
52	3
53	3
54	2
55	1
56	11
57	9
58	8
59	8
60	6
61	6
62	4
63	4
64	3
65	2
66	0

n	a(n)
1	1
2	2
3	0
4	3
5	1
6	0
7	4
8	2
9	1
10	1
11	5
12	3
13	2
14	2
15	0
16	6
17	4
18	3
19	3
20	1
21	1
22	7
23	5
24	4
25	4
26	2
27	2
28	0
29	8
30	6
31	5
32	5
33	3
34	3
35	1
36	1
37	9
38	7
39	6
40	6
41	4
42	4
43	2
44	2
45	1
46	10
47	8
48	7
49	7
50	5
51	5
52	3
53	3
54	2
55	1
56	11
57	9
58	8
59	8
60	6
61	6
62	4
63	4
64	3
65	2
66	0