A056527 - cp's OEIS frontend

A056527 Numbers where iterated sum of digits of square settles down to a cyclic pattern (in fact 13, 16, 13, 16, ...).

n	a(n)
1	2
2	4
3	5
4	7
5	11
6	13
7	14
8	16
9	20
10	22
11	23
12	25
13	29
14	31
15	32
16	34
17	38
18	40
19	41
20	43
21	47
22	49
23	50
24	52
25	56
26	58
27	59
28	61
29	65
30	67
31	68
32	70
33	74
34	76
35	77
36	79
37	83
38	85
39	86
40	88
41	92
42	94
43	95
44	97
45	101
46	103
47	104
48	106
49	110
50	112
51	113
52	115
53	119
54	121
55	122
56	124
57	128
58	130
59	131
60	133
61	137
62	139
63	140

[2, 4, 5, 7, 11, 13, 14, 16, 20, 22, 23, 25, 29, 31, 32, 34, 38, 40, 41, 43, 47, 49, 50, 52, 56, 58, 59, 61, 65, 67, 68, 70, 74, 76, 77, 79, 83, 85, 86, 88, 92, 94, 95, 97, 101, 103, 104, 106, 110, 112, 113, 115, 119, 121, 122, 124, 128, 130, 131, 133, 137, 139, 140]

cp's OEIS Frontend

A056527 Numbers where iterated sum of digits of square settles down to a cyclic pattern (in fact 13, 16, 13, 16, ...).

Table of values

List of values

n	a(n)
1	2
2	4
3	5
4	7
5	11
6	13
7	14
8	16
9	20
10	22
11	23
12	25
13	29
14	31
15	32
16	34
17	38
18	40
19	41
20	43
21	47
22	49
23	50
24	52
25	56
26	58
27	59
28	61
29	65
30	67
31	68
32	70
33	74
34	76
35	77
36	79
37	83
38	85
39	86
40	88
41	92
42	94
43	95
44	97
45	101
46	103
47	104
48	106
49	110
50	112
51	113
52	115
53	119
54	121
55	122
56	124
57	128
58	130
59	131
60	133
61	137
62	139
63	140

n	a(n)
1	2
2	4
3	5
4	7
5	11
6	13
7	14
8	16
9	20
10	22
11	23
12	25
13	29
14	31
15	32
16	34
17	38
18	40
19	41
20	43
21	47
22	49
23	50
24	52
25	56
26	58
27	59
28	61
29	65
30	67
31	68
32	70
33	74
34	76
35	77
36	79
37	83
38	85
39	86
40	88
41	92
42	94
43	95
44	97
45	101
46	103
47	104
48	106
49	110
50	112
51	113
52	115
53	119
54	121
55	122
56	124
57	128
58	130
59	131
60	133
61	137
62	139
63	140

n	a(n)
1	2
2	4
3	5
4	7
5	11
6	13
7	14
8	16
9	20
10	22
11	23
12	25
13	29
14	31
15	32
16	34
17	38
18	40
19	41
20	43
21	47
22	49
23	50
24	52
25	56
26	58
27	59
28	61
29	65
30	67
31	68
32	70
33	74
34	76
35	77
36	79
37	83
38	85
39	86
40	88
41	92
42	94
43	95
44	97
45	101
46	103
47	104
48	106
49	110
50	112
51	113
52	115
53	119
54	121
55	122
56	124
57	128
58	130
59	131
60	133
61	137
62	139
63	140