A036441 - cp's OEIS frontend

A036441 a(n+1) = next number having largest prime dividing a(n) as a factor, with a(1) = 2.

n	a(n)
1	2
2	4
3	6
4	9
5	12
6	15
7	20
8	25
9	30
10	35
11	42
12	49
13	56
14	63
15	70
16	77
17	88
18	99
19	110
20	121
21	132
22	143
23	156
24	169
25	182
26	195
27	208
28	221
29	238
30	255
31	272
32	289
33	306
34	323
35	342
36	361
37	380
38	399
39	418
40	437
41	460
42	483
43	506
44	529
45	552
46	575
47	598
48	621
49	644
50	667
51	696
52	725
53	754
54	783
55	812
56	841
57	870

[2, 4, 6, 9, 12, 15, 20, 25, 30, 35, 42, 49, 56, 63, 70, 77, 88, 99, 110, 121, 132, 143, 156, 169, 182, 195, 208, 221, 238, 255, 272, 289, 306, 323, 342, 361, 380, 399, 418, 437, 460, 483, 506, 529, 552, 575, 598, 621, 644, 667, 696, 725, 754, 783, 812, 841, 870]

cp's OEIS Frontend

A036441 a(n+1) = next number having largest prime dividing a(n) as a factor, with a(1) = 2.

Table of values

List of values

n	a(n)
1	2
2	4
3	6
4	9
5	12
6	15
7	20
8	25
9	30
10	35
11	42
12	49
13	56
14	63
15	70
16	77
17	88
18	99
19	110
20	121
21	132
22	143
23	156
24	169
25	182
26	195
27	208
28	221
29	238
30	255
31	272
32	289
33	306
34	323
35	342
36	361
37	380
38	399
39	418
40	437
41	460
42	483
43	506
44	529
45	552
46	575
47	598
48	621
49	644
50	667
51	696
52	725
53	754
54	783
55	812
56	841
57	870

n	a(n)
1	2
2	4
3	6
4	9
5	12
6	15
7	20
8	25
9	30
10	35
11	42
12	49
13	56
14	63
15	70
16	77
17	88
18	99
19	110
20	121
21	132
22	143
23	156
24	169
25	182
26	195
27	208
28	221
29	238
30	255
31	272
32	289
33	306
34	323
35	342
36	361
37	380
38	399
39	418
40	437
41	460
42	483
43	506
44	529
45	552
46	575
47	598
48	621
49	644
50	667
51	696
52	725
53	754
54	783
55	812
56	841
57	870

n	a(n)
1	2
2	4
3	6
4	9
5	12
6	15
7	20
8	25
9	30
10	35
11	42
12	49
13	56
14	63
15	70
16	77
17	88
18	99
19	110
20	121
21	132
22	143
23	156
24	169
25	182
26	195
27	208
28	221
29	238
30	255
31	272
32	289
33	306
34	323
35	342
36	361
37	380
38	399
39	418
40	437
41	460
42	483
43	506
44	529
45	552
46	575
47	598
48	621
49	644
50	667
51	696
52	725
53	754
54	783
55	812
56	841
57	870