A081883 - cp's OEIS frontend

A081883 Numbers n such that the number of steps needed to reach an integer starting with n-1/4 or n+1/4 and iterating the map x-->x*ceiling(x) is the same.

n	a(n)
1	5
2	9
3	21
4	37
5	46
6	49
7	53
8	69
9	85
10	101
11	113
12	117
13	121
14	133
15	137
16	149
17	165
18	174
19	177
20	181
21	197
22	213
23	217
24	229
25	241
26	245
27	261
28	265
29	277
30	293
31	302
32	305
33	309
34	313
35	325
36	341
37	357
38	369
39	373
40	389
41	393
42	405
43	421
44	430
45	433
46	437
47	441
48	453
49	469
50	485
51	497
52	501
53	517
54	521

[5, 9, 21, 37, 46, 49, 53, 69, 85, 101, 113, 117, 121, 133, 137, 149, 165, 174, 177, 181, 197, 213, 217, 229, 241, 245, 261, 265, 277, 293, 302, 305, 309, 313, 325, 341, 357, 369, 373, 389, 393, 405, 421, 430, 433, 437, 441, 453, 469, 485, 497, 501, 517, 521]

cp's OEIS Frontend

A081883 Numbers n such that the number of steps needed to reach an integer starting with n-1/4 or n+1/4 and iterating the map x-->x*ceiling(x) is the same.

Table of values

List of values

n	a(n)
1	5
2	9
3	21
4	37
5	46
6	49
7	53
8	69
9	85
10	101
11	113
12	117
13	121
14	133
15	137
16	149
17	165
18	174
19	177
20	181
21	197
22	213
23	217
24	229
25	241
26	245
27	261
28	265
29	277
30	293
31	302
32	305
33	309
34	313
35	325
36	341
37	357
38	369
39	373
40	389
41	393
42	405
43	421
44	430
45	433
46	437
47	441
48	453
49	469
50	485
51	497
52	501
53	517
54	521

n	a(n)
1	5
2	9
3	21
4	37
5	46
6	49
7	53
8	69
9	85
10	101
11	113
12	117
13	121
14	133
15	137
16	149
17	165
18	174
19	177
20	181
21	197
22	213
23	217
24	229
25	241
26	245
27	261
28	265
29	277
30	293
31	302
32	305
33	309
34	313
35	325
36	341
37	357
38	369
39	373
40	389
41	393
42	405
43	421
44	430
45	433
46	437
47	441
48	453
49	469
50	485
51	497
52	501
53	517
54	521

n	a(n)
1	5
2	9
3	21
4	37
5	46
6	49
7	53
8	69
9	85
10	101
11	113
12	117
13	121
14	133
15	137
16	149
17	165
18	174
19	177
20	181
21	197
22	213
23	217
24	229
25	241
26	245
27	261
28	265
29	277
30	293
31	302
32	305
33	309
34	313
35	325
36	341
37	357
38	369
39	373
40	389
41	393
42	405
43	421
44	430
45	433
46	437
47	441
48	453
49	469
50	485
51	497
52	501
53	517
54	521