A140831 - cp's OEIS frontend

A140831 Numbers in whose canonical prime factorization the powers of the primes do not form an increasing sequence.

n	a(n)
1	12
2	24
3	40
4	45
5	48
6	56
7	60
8	63
9	80
10	84
11	90
12	96
13	112
14	120
15	126
16	132
17	135
18	144
19	156
20	160
21	168
22	175
23	176
24	180
25	189
26	192
27	204
28	208
29	224
30	228
31	240
32	252
33	264
34	270
35	275
36	276
37	280
38	288
39	297
40	300
41	312
42	315
43	320
44	325
45	336
46	348
47	350
48	351
49	352
50	360
51	372
52	378
53	384
54	405

[12, 24, 40, 45, 48, 56, 60, 63, 80, 84, 90, 96, 112, 120, 126, 132, 135, 144, 156, 160, 168, 175, 176, 180, 189, 192, 204, 208, 224, 228, 240, 252, 264, 270, 275, 276, 280, 288, 297, 300, 312, 315, 320, 325, 336, 348, 350, 351, 352, 360, 372, 378, 384, 405]

cp's OEIS Frontend

A140831 Numbers in whose canonical prime factorization the powers of the primes do not form an increasing sequence.

Table of values

List of values

n	a(n)
1	12
2	24
3	40
4	45
5	48
6	56
7	60
8	63
9	80
10	84
11	90
12	96
13	112
14	120
15	126
16	132
17	135
18	144
19	156
20	160
21	168
22	175
23	176
24	180
25	189
26	192
27	204
28	208
29	224
30	228
31	240
32	252
33	264
34	270
35	275
36	276
37	280
38	288
39	297
40	300
41	312
42	315
43	320
44	325
45	336
46	348
47	350
48	351
49	352
50	360
51	372
52	378
53	384
54	405

n	a(n)
1	12
2	24
3	40
4	45
5	48
6	56
7	60
8	63
9	80
10	84
11	90
12	96
13	112
14	120
15	126
16	132
17	135
18	144
19	156
20	160
21	168
22	175
23	176
24	180
25	189
26	192
27	204
28	208
29	224
30	228
31	240
32	252
33	264
34	270
35	275
36	276
37	280
38	288
39	297
40	300
41	312
42	315
43	320
44	325
45	336
46	348
47	350
48	351
49	352
50	360
51	372
52	378
53	384
54	405

n	a(n)
1	12
2	24
3	40
4	45
5	48
6	56
7	60
8	63
9	80
10	84
11	90
12	96
13	112
14	120
15	126
16	132
17	135
18	144
19	156
20	160
21	168
22	175
23	176
24	180
25	189
26	192
27	204
28	208
29	224
30	228
31	240
32	252
33	264
34	270
35	275
36	276
37	280
38	288
39	297
40	300
41	312
42	315
43	320
44	325
45	336
46	348
47	350
48	351
49	352
50	360
51	372
52	378
53	384
54	405