A061905 - cp's OEIS frontend

A061905 The iterative cycle: n -> sum of digits of n^2 has only two distinct elements.

n	a(n)
1	7
2	8
3	13
4	14
5	16
6	19
7	22
8	23
9	24
10	25
11	27
12	29
13	31
14	33
15	34
16	35
17	36
18	38
19	41
20	42
21	46
22	47
23	52
24	54
25	55
26	56
27	57
28	58
29	59
30	61
31	65
32	66
33	68
34	69
35	70
36	71
37	72
38	75
39	78
40	79
41	80
42	81
43	84
44	85
45	95
46	96
47	99
48	103
49	104
50	106
51	108
52	112
53	115
54	119
55	121
56	123
57	129
58	130
59	131
60	132
61	135
62	138
63	139
64	140

[7, 8, 13, 14, 16, 19, 22, 23, 24, 25, 27, 29, 31, 33, 34, 35, 36, 38, 41, 42, 46, 47, 52, 54, 55, 56, 57, 58, 59, 61, 65, 66, 68, 69, 70, 71, 72, 75, 78, 79, 80, 81, 84, 85, 95, 96, 99, 103, 104, 106, 108, 112, 115, 119, 121, 123, 129, 130, 131, 132, 135, 138, 139, 140]

cp's OEIS Frontend

A061905 The iterative cycle: n -> sum of digits of n^2 has only two distinct elements.

Table of values

List of values

n	a(n)
1	7
2	8
3	13
4	14
5	16
6	19
7	22
8	23
9	24
10	25
11	27
12	29
13	31
14	33
15	34
16	35
17	36
18	38
19	41
20	42
21	46
22	47
23	52
24	54
25	55
26	56
27	57
28	58
29	59
30	61
31	65
32	66
33	68
34	69
35	70
36	71
37	72
38	75
39	78
40	79
41	80
42	81
43	84
44	85
45	95
46	96
47	99
48	103
49	104
50	106
51	108
52	112
53	115
54	119
55	121
56	123
57	129
58	130
59	131
60	132
61	135
62	138
63	139
64	140

n	a(n)
1	7
2	8
3	13
4	14
5	16
6	19
7	22
8	23
9	24
10	25
11	27
12	29
13	31
14	33
15	34
16	35
17	36
18	38
19	41
20	42
21	46
22	47
23	52
24	54
25	55
26	56
27	57
28	58
29	59
30	61
31	65
32	66
33	68
34	69
35	70
36	71
37	72
38	75
39	78
40	79
41	80
42	81
43	84
44	85
45	95
46	96
47	99
48	103
49	104
50	106
51	108
52	112
53	115
54	119
55	121
56	123
57	129
58	130
59	131
60	132
61	135
62	138
63	139
64	140

n	a(n)
1	7
2	8
3	13
4	14
5	16
6	19
7	22
8	23
9	24
10	25
11	27
12	29
13	31
14	33
15	34
16	35
17	36
18	38
19	41
20	42
21	46
22	47
23	52
24	54
25	55
26	56
27	57
28	58
29	59
30	61
31	65
32	66
33	68
34	69
35	70
36	71
37	72
38	75
39	78
40	79
41	80
42	81
43	84
44	85
45	95
46	96
47	99
48	103
49	104
50	106
51	108
52	112
53	115
54	119
55	121
56	123
57	129
58	130
59	131
60	132
61	135
62	138
63	139
64	140