A278492 - cp's OEIS frontend

A278492 Square array where row n (n >= 0) gives the numbers remaining after the n-th round of the Flavius sieve, read by descending antidiagonals.

n	a(n)
0	1
1	2
2	1
3	3
4	3
5	1
6	4
7	5
8	3
9	1
10	5
11	7
12	7
13	3
14	1
15	6
16	9
17	9
18	7
19	3
20	1
21	7
22	11
23	13
24	13
25	7
26	3
27	1
28	8
29	13
30	15
31	15
32	13
33	7
34	3
35	1
36	9
37	15
38	19
39	19
40	19
41	13
42	7
43	3
44	1
45	10
46	17
47	21
48	25
49	25
50	19
51	13
52	7
53	3
54	1
55	11
56	19
57	25
58	27
59	27
60	27
61	19
62	13
63	7
64	3
65	1
66	12
67	21
68	27
69	31
70	31
71	31
72	27
73	19
74	13
75	7
76	3
77	1
78	13
79	23
80	31
81	37
82	39
83	39
84	39
85	27
86	19
87	13
88	7
89	3
90	1

[1, 2, 1, 3, 3, 1, 4, 5, 3, 1, 5, 7, 7, 3, 1, 6, 9, 9, 7, 3, 1, 7, 11, 13, 13, 7, 3, 1, 8, 13, 15, 15, 13, 7, 3, 1, 9, 15, 19, 19, 19, 13, 7, 3, 1, 10, 17, 21, 25, 25, 19, 13, 7, 3, 1, 11, 19, 25, 27, 27, 27, 19, 13, 7, 3, 1, 12, 21, 27, 31, 31, 31, 27, 19, 13, 7, 3, 1, 13, 23, 31, 37, 39, 39, 39, 27, 19, 13, 7, 3, 1]

cp's OEIS Frontend

A278492 Square array where row n (n >= 0) gives the numbers remaining after the n-th round of the Flavius sieve, read by descending antidiagonals.

Table of values

List of values

n	a(n)
0	1
1	2
2	1
3	3
4	3
5	1
6	4
7	5
8	3
9	1
10	5
11	7
12	7
13	3
14	1
15	6
16	9
17	9
18	7
19	3
20	1
21	7
22	11
23	13
24	13
25	7
26	3
27	1
28	8
29	13
30	15
31	15
32	13
33	7
34	3
35	1
36	9
37	15
38	19
39	19
40	19
41	13
42	7
43	3
44	1
45	10
46	17
47	21
48	25
49	25
50	19
51	13
52	7
53	3
54	1
55	11
56	19
57	25
58	27
59	27
60	27
61	19
62	13
63	7
64	3
65	1
66	12
67	21
68	27
69	31
70	31
71	31
72	27
73	19
74	13
75	7
76	3
77	1
78	13
79	23
80	31
81	37
82	39
83	39
84	39
85	27
86	19
87	13
88	7
89	3
90	1

n	a(n)
0	1
1	2
2	1
3	3
4	3
5	1
6	4
7	5
8	3
9	1
10	5
11	7
12	7
13	3
14	1
15	6
16	9
17	9
18	7
19	3
20	1
21	7
22	11
23	13
24	13
25	7
26	3
27	1
28	8
29	13
30	15
31	15
32	13
33	7
34	3
35	1
36	9
37	15
38	19
39	19
40	19
41	13
42	7
43	3
44	1
45	10
46	17
47	21
48	25
49	25
50	19
51	13
52	7
53	3
54	1
55	11
56	19
57	25
58	27
59	27
60	27
61	19
62	13
63	7
64	3
65	1
66	12
67	21
68	27
69	31
70	31
71	31
72	27
73	19
74	13
75	7
76	3
77	1
78	13
79	23
80	31
81	37
82	39
83	39
84	39
85	27
86	19
87	13
88	7
89	3
90	1

n	a(n)
0	1
1	2
2	1
3	3
4	3
5	1
6	4
7	5
8	3
9	1
10	5
11	7
12	7
13	3
14	1
15	6
16	9
17	9
18	7
19	3
20	1
21	7
22	11
23	13
24	13
25	7
26	3
27	1
28	8
29	13
30	15
31	15
32	13
33	7
34	3
35	1
36	9
37	15
38	19
39	19
40	19
41	13
42	7
43	3
44	1
45	10
46	17
47	21
48	25
49	25
50	19
51	13
52	7
53	3
54	1
55	11
56	19
57	25
58	27
59	27
60	27
61	19
62	13
63	7
64	3
65	1
66	12
67	21
68	27
69	31
70	31
71	31
72	27
73	19
74	13
75	7
76	3
77	1
78	13
79	23
80	31
81	37
82	39
83	39
84	39
85	27
86	19
87	13
88	7
89	3
90	1