A061411 - cp's OEIS frontend

A061411 Numbers k such that m*2^k - 1 is nonprime for all coefficients m in the range 0 <= m <= k.

n	a(n)
1	1
2	22
3	24
4	65
5	110
6	112
7	135
8	137
9	166
10	167
11	218
12	219
13	220
14	228
15	229
16	239
17	257
18	280
19	310
20	344
21	345
22	346
23	398
24	399
25	403
26	404
27	405
28	430
29	439
30	440
31	475
32	494
33	504
34	505
35	508
36	522
37	524
38	534
39	535
40	536
41	557
42	559
43	592
44	619
45	620
46	624
47	625
48	626
49	679
50	703
51	705
52	706

[1, 22, 24, 65, 110, 112, 135, 137, 166, 167, 218, 219, 220, 228, 229, 239, 257, 280, 310, 344, 345, 346, 398, 399, 403, 404, 405, 430, 439, 440, 475, 494, 504, 505, 508, 522, 524, 534, 535, 536, 557, 559, 592, 619, 620, 624, 625, 626, 679, 703, 705, 706]

cp's OEIS Frontend

A061411 Numbers k such that m*2^k - 1 is nonprime for all coefficients m in the range 0 <= m <= k.

Table of values

List of values

n	a(n)
1	1
2	22
3	24
4	65
5	110
6	112
7	135
8	137
9	166
10	167
11	218
12	219
13	220
14	228
15	229
16	239
17	257
18	280
19	310
20	344
21	345
22	346
23	398
24	399
25	403
26	404
27	405
28	430
29	439
30	440
31	475
32	494
33	504
34	505
35	508
36	522
37	524
38	534
39	535
40	536
41	557
42	559
43	592
44	619
45	620
46	624
47	625
48	626
49	679
50	703
51	705
52	706

n	a(n)
1	1
2	22
3	24
4	65
5	110
6	112
7	135
8	137
9	166
10	167
11	218
12	219
13	220
14	228
15	229
16	239
17	257
18	280
19	310
20	344
21	345
22	346
23	398
24	399
25	403
26	404
27	405
28	430
29	439
30	440
31	475
32	494
33	504
34	505
35	508
36	522
37	524
38	534
39	535
40	536
41	557
42	559
43	592
44	619
45	620
46	624
47	625
48	626
49	679
50	703
51	705
52	706

n	a(n)
1	1
2	22
3	24
4	65
5	110
6	112
7	135
8	137
9	166
10	167
11	218
12	219
13	220
14	228
15	229
16	239
17	257
18	280
19	310
20	344
21	345
22	346
23	398
24	399
25	403
26	404
27	405
28	430
29	439
30	440
31	475
32	494
33	504
34	505
35	508
36	522
37	524
38	534
39	535
40	536
41	557
42	559
43	592
44	619
45	620
46	624
47	625
48	626
49	679
50	703
51	705
52	706