A305420 - cp's OEIS frontend

A305420 Smallest k > n whose binary expansion encodes an irreducible (0,1)-polynomial over GF(2)[X].

n	a(n)
1	2
2	3
3	7
4	7
5	7
6	7
7	11
8	11
9	11
10	11
11	13
12	13
13	19
14	19
15	19
16	19
17	19
18	19
19	25
20	25
21	25
22	25
23	25
24	25
25	31
26	31
27	31
28	31
29	31
30	31
31	37
32	37
33	37
34	37
35	37
36	37
37	41
38	41
39	41
40	41
41	47
42	47
43	47
44	47
45	47
46	47
47	55
48	55
49	55
50	55
51	55
52	55
53	55
54	55
55	59
56	59
57	59
58	59
59	61
60	61
61	67
62	67
63	67
64	67
65	67
66	67
67	73
68	73
69	73
70	73
71	73
72	73
73	87
74	87
75	87
76	87
77	87
78	87
79	87
80	87
81	87
82	87
83	87
84	87
85	87
86	87
87	91

[2, 3, 7, 7, 7, 7, 11, 11, 11, 11, 13, 13, 19, 19, 19, 19, 19, 19, 25, 25, 25, 25, 25, 25, 31, 31, 31, 31, 31, 31, 37, 37, 37, 37, 37, 37, 41, 41, 41, 41, 47, 47, 47, 47, 47, 47, 55, 55, 55, 55, 55, 55, 55, 55, 59, 59, 59, 59, 61, 61, 67, 67, 67, 67, 67, 67, 73, 73, 73, 73, 73, 73, 87, 87, 87, 87, 87, 87, 87, 87, 87, 87, 87, 87, 87, 87, 91]

cp's OEIS Frontend

A305420 Smallest k > n whose binary expansion encodes an irreducible (0,1)-polynomial over GF(2)[X].

Table of values

List of values

n	a(n)
1	2
2	3
3	7
4	7
5	7
6	7
7	11
8	11
9	11
10	11
11	13
12	13
13	19
14	19
15	19
16	19
17	19
18	19
19	25
20	25
21	25
22	25
23	25
24	25
25	31
26	31
27	31
28	31
29	31
30	31
31	37
32	37
33	37
34	37
35	37
36	37
37	41
38	41
39	41
40	41
41	47
42	47
43	47
44	47
45	47
46	47
47	55
48	55
49	55
50	55
51	55
52	55
53	55
54	55
55	59
56	59
57	59
58	59
59	61
60	61
61	67
62	67
63	67
64	67
65	67
66	67
67	73
68	73
69	73
70	73
71	73
72	73
73	87
74	87
75	87
76	87
77	87
78	87
79	87
80	87
81	87
82	87
83	87
84	87
85	87
86	87
87	91

n	a(n)
1	2
2	3
3	7
4	7
5	7
6	7
7	11
8	11
9	11
10	11
11	13
12	13
13	19
14	19
15	19
16	19
17	19
18	19
19	25
20	25
21	25
22	25
23	25
24	25
25	31
26	31
27	31
28	31
29	31
30	31
31	37
32	37
33	37
34	37
35	37
36	37
37	41
38	41
39	41
40	41
41	47
42	47
43	47
44	47
45	47
46	47
47	55
48	55
49	55
50	55
51	55
52	55
53	55
54	55
55	59
56	59
57	59
58	59
59	61
60	61
61	67
62	67
63	67
64	67
65	67
66	67
67	73
68	73
69	73
70	73
71	73
72	73
73	87
74	87
75	87
76	87
77	87
78	87
79	87
80	87
81	87
82	87
83	87
84	87
85	87
86	87
87	91

n	a(n)
1	2
2	3
3	7
4	7
5	7
6	7
7	11
8	11
9	11
10	11
11	13
12	13
13	19
14	19
15	19
16	19
17	19
18	19
19	25
20	25
21	25
22	25
23	25
24	25
25	31
26	31
27	31
28	31
29	31
30	31
31	37
32	37
33	37
34	37
35	37
36	37
37	41
38	41
39	41
40	41
41	47
42	47
43	47
44	47
45	47
46	47
47	55
48	55
49	55
50	55
51	55
52	55
53	55
54	55
55	59
56	59
57	59
58	59
59	61
60	61
61	67
62	67
63	67
64	67
65	67
66	67
67	73
68	73
69	73
70	73
71	73
72	73
73	87
74	87
75	87
76	87
77	87
78	87
79	87
80	87
81	87
82	87
83	87
84	87
85	87
86	87
87	91