A143538 - cp's OEIS frontend

A143538 Triangle read by rows, T(n,k) = 1 if k is prime, 0 otherwise; 1 <= k <= n.

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

[0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1]

cp's OEIS Frontend

A143538 Triangle read by rows, T(n,k) = 1 if k is prime, 0 otherwise; 1 <= k <= n.

Table of values

List of values

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

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

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