A219303 - cp's OEIS frontend

A219303 Numbers which do not reach zero under the repeated iteration x -> floor(sqrt(x)) * (x - floor(sqrt(x))^2).

n	a(n)
1	8
2	14
3	15
4	18
5	23
6	28
7	39
8	51
9	53
10	65
11	83
12	139
13	172
14	174
15	194
16	197
17	198
18	226
19	292
20	318
21	325
22	335
23	355
24	358
25	388
26	493
27	513
28	518
29	523
30	530
31	558
32	573
33	612
34	638
35	667
36	708
37	709
38	715
39	717
40	748
41	761
42	766
43	785
44	830
45	832
46	847
47	858
48	863
49	864
50	935
51	944
52	979
53	999

[8, 14, 15, 18, 23, 28, 39, 51, 53, 65, 83, 139, 172, 174, 194, 197, 198, 226, 292, 318, 325, 335, 355, 358, 388, 493, 513, 518, 523, 530, 558, 573, 612, 638, 667, 708, 709, 715, 717, 748, 761, 766, 785, 830, 832, 847, 858, 863, 864, 935, 944, 979, 999]

cp's OEIS Frontend

A219303 Numbers which do not reach zero under the repeated iteration x -> floor(sqrt(x)) * (x - floor(sqrt(x))^2).

Table of values

List of values

n	a(n)
1	8
2	14
3	15
4	18
5	23
6	28
7	39
8	51
9	53
10	65
11	83
12	139
13	172
14	174
15	194
16	197
17	198
18	226
19	292
20	318
21	325
22	335
23	355
24	358
25	388
26	493
27	513
28	518
29	523
30	530
31	558
32	573
33	612
34	638
35	667
36	708
37	709
38	715
39	717
40	748
41	761
42	766
43	785
44	830
45	832
46	847
47	858
48	863
49	864
50	935
51	944
52	979
53	999

n	a(n)
1	8
2	14
3	15
4	18
5	23
6	28
7	39
8	51
9	53
10	65
11	83
12	139
13	172
14	174
15	194
16	197
17	198
18	226
19	292
20	318
21	325
22	335
23	355
24	358
25	388
26	493
27	513
28	518
29	523
30	530
31	558
32	573
33	612
34	638
35	667
36	708
37	709
38	715
39	717
40	748
41	761
42	766
43	785
44	830
45	832
46	847
47	858
48	863
49	864
50	935
51	944
52	979
53	999

n	a(n)
1	8
2	14
3	15
4	18
5	23
6	28
7	39
8	51
9	53
10	65
11	83
12	139
13	172
14	174
15	194
16	197
17	198
18	226
19	292
20	318
21	325
22	335
23	355
24	358
25	388
26	493
27	513
28	518
29	523
30	530
31	558
32	573
33	612
34	638
35	667
36	708
37	709
38	715
39	717
40	748
41	761
42	766
43	785
44	830
45	832
46	847
47	858
48	863
49	864
50	935
51	944
52	979
53	999