A328587 - cp's OEIS frontend

A328587 Numbers n for which A257993(A276086(A276086(n))) is less than A257993(n), where A276086 converts the primorial base expansion of n into its prime product form, and A257993 returns the index of the least prime not present in its argument.

n	a(n)
1	12
2	24
3	30
4	42
5	54
6	60
7	72
8	84
9	90
10	102
11	114
12	120
13	132
14	144
15	150
16	162
17	174
18	180
19	192
20	204
21	210
22	216
23	228
24	246
25	258
26	276
27	288
28	306
29	318
30	336
31	348
32	366
33	378
34	396
35	408
36	420
37	432
38	444
39	450
40	462
41	474
42	480
43	492
44	504
45	510
46	522
47	534
48	540
49	552
50	564
51	570
52	582
53	594
54	600
55	612
56	624
57	636
58	648
59	666
60	678
61	696
62	708
63	726
64	738
65	756
66	768
67	786
68	798
69	816

[12, 24, 30, 42, 54, 60, 72, 84, 90, 102, 114, 120, 132, 144, 150, 162, 174, 180, 192, 204, 210, 216, 228, 246, 258, 276, 288, 306, 318, 336, 348, 366, 378, 396, 408, 420, 432, 444, 450, 462, 474, 480, 492, 504, 510, 522, 534, 540, 552, 564, 570, 582, 594, 600, 612, 624, 636, 648, 666, 678, 696, 708, 726, 738, 756, 768, 786, 798, 816]

cp's OEIS Frontend

A328587 Numbers n for which A257993(A276086(A276086(n))) is less than A257993(n), where A276086 converts the primorial base expansion of n into its prime product form, and A257993 returns the index of the least prime not present in its argument.

Table of values

List of values

n	a(n)
1	12
2	24
3	30
4	42
5	54
6	60
7	72
8	84
9	90
10	102
11	114
12	120
13	132
14	144
15	150
16	162
17	174
18	180
19	192
20	204
21	210
22	216
23	228
24	246
25	258
26	276
27	288
28	306
29	318
30	336
31	348
32	366
33	378
34	396
35	408
36	420
37	432
38	444
39	450
40	462
41	474
42	480
43	492
44	504
45	510
46	522
47	534
48	540
49	552
50	564
51	570
52	582
53	594
54	600
55	612
56	624
57	636
58	648
59	666
60	678
61	696
62	708
63	726
64	738
65	756
66	768
67	786
68	798
69	816

n	a(n)
1	12
2	24
3	30
4	42
5	54
6	60
7	72
8	84
9	90
10	102
11	114
12	120
13	132
14	144
15	150
16	162
17	174
18	180
19	192
20	204
21	210
22	216
23	228
24	246
25	258
26	276
27	288
28	306
29	318
30	336
31	348
32	366
33	378
34	396
35	408
36	420
37	432
38	444
39	450
40	462
41	474
42	480
43	492
44	504
45	510
46	522
47	534
48	540
49	552
50	564
51	570
52	582
53	594
54	600
55	612
56	624
57	636
58	648
59	666
60	678
61	696
62	708
63	726
64	738
65	756
66	768
67	786
68	798
69	816

n	a(n)
1	12
2	24
3	30
4	42
5	54
6	60
7	72
8	84
9	90
10	102
11	114
12	120
13	132
14	144
15	150
16	162
17	174
18	180
19	192
20	204
21	210
22	216
23	228
24	246
25	258
26	276
27	288
28	306
29	318
30	336
31	348
32	366
33	378
34	396
35	408
36	420
37	432
38	444
39	450
40	462
41	474
42	480
43	492
44	504
45	510
46	522
47	534
48	540
49	552
50	564
51	570
52	582
53	594
54	600
55	612
56	624
57	636
58	648
59	666
60	678
61	696
62	708
63	726
64	738
65	756
66	768
67	786
68	798
69	816