A353389 - cp's OEIS frontend

A353389 Create the sequence of all positive integers > 1 that are prime or whose prime shadow (A181819) is a divisor that is already in the sequence. Then remove all the primes.

n	a(n)
1	9
2	36
3	125
4	225
5	441
6	1089
7	1260
8	1521
9	1980
10	2340
11	2401
12	2601
13	2772
14	3060
15	3249
16	3276
17	3420
18	4140
19	4284
20	4761
21	4788
22	5148
23	5220
24	5580
25	5796
26	6660
27	6732
28	7308
29	7380
30	7524
31	7569
32	7740
33	7812
34	7956
35	8460
36	8649
37	8892
38	9108
39	9324
40	9540
41	10332
42	10620
43	10764
44	10836

[9, 36, 125, 225, 441, 1089, 1260, 1521, 1980, 2340, 2401, 2601, 2772, 3060, 3249, 3276, 3420, 4140, 4284, 4761, 4788, 5148, 5220, 5580, 5796, 6660, 6732, 7308, 7380, 7524, 7569, 7740, 7812, 7956, 8460, 8649, 8892, 9108, 9324, 9540, 10332, 10620, 10764, 10836]

cp's OEIS Frontend

A353389 Create the sequence of all positive integers > 1 that are prime or whose prime shadow (A181819) is a divisor that is already in the sequence. Then remove all the primes.

Table of values

List of values