A077402 - cp's OEIS frontend

A077402 Reverse and Add! carried out in base 3; number of steps needed to reach a palindrome, or -1 if no palindrome is ever reached.

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	2
6	1
7	2
8	0
9	1
10	0
11	2
12	1
13	0
14	2
15	3
16	0
17	4
18	1
19	2
20	0
21	1
22	2
23	0
24	3
25	4
26	0
27	1
28	0
29	2
30	1
31	1
32	2
33	1
34	1
35	2
36	1
37	1
38	2
39	1
40	0
41	2
42	3
43	3
44	2
45	1
46	1
47	2
48	3
49	3
50	2
51	3
52	0
53	18
54	1
55	2
56	0
57	1
58	2
59	4
60	1
61	2
62	2
63	1
64	2
65	4
66	1
67	2
68	0
69	3
70	2
71	4
72	1
73	2
74	2
75	3
76	2
77	4
78	17
79	18
80	0
81	1
82	0
83	2
84	1
85	1
86	2
87	1
88	1
89	3
90	1
91	0
92	2
93	1
94	1
95	16
96	1
97	1
98	2
99	2
100	0
101	2
102	4
103	-1
104	16
105	3
106	15
107	2
108	1
109	1
110	2
111	1
112	0
113	3
114	3
115	3
116	2
117	1
118	1
119	16
120	1

[0, 0, 0, 1, 0, 2, 1, 2, 0, 1, 0, 2, 1, 0, 2, 3, 0, 4, 1, 2, 0, 1, 2, 0, 3, 4, 0, 1, 0, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 0, 2, 3, 3, 2, 1, 1, 2, 3, 3, 2, 3, 0, 18, 1, 2, 0, 1, 2, 4, 1, 2, 2, 1, 2, 4, 1, 2, 0, 3, 2, 4, 1, 2, 2, 3, 2, 4, 17, 18, 0, 1, 0, 2, 1, 1, 2, 1, 1, 3, 1, 0, 2, 1, 1, 16, 1, 1, 2, 2, 0, 2, 4, -1, 16, 3, 15, 2, 1, 1, 2, 1, 0, 3, 3, 3, 2, 1, 1, 16, 1]

cp's OEIS Frontend

A077402 Reverse and Add! carried out in base 3; number of steps needed to reach a palindrome, or -1 if no palindrome is ever reached.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	2
6	1
7	2
8	0
9	1
10	0
11	2
12	1
13	0
14	2
15	3
16	0
17	4
18	1
19	2
20	0
21	1
22	2
23	0
24	3
25	4
26	0
27	1
28	0
29	2
30	1
31	1
32	2
33	1
34	1
35	2
36	1
37	1
38	2
39	1
40	0
41	2
42	3
43	3
44	2
45	1
46	1
47	2
48	3
49	3
50	2
51	3
52	0
53	18
54	1
55	2
56	0
57	1
58	2
59	4
60	1
61	2
62	2
63	1
64	2
65	4
66	1
67	2
68	0
69	3
70	2
71	4
72	1
73	2
74	2
75	3
76	2
77	4
78	17
79	18
80	0
81	1
82	0
83	2
84	1
85	1
86	2
87	1
88	1
89	3
90	1
91	0
92	2
93	1
94	1
95	16
96	1
97	1
98	2
99	2
100	0
101	2
102	4
103	-1
104	16
105	3
106	15
107	2
108	1
109	1
110	2
111	1
112	0
113	3
114	3
115	3
116	2
117	1
118	1
119	16
120	1

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	2
6	1
7	2
8	0
9	1
10	0
11	2
12	1
13	0
14	2
15	3
16	0
17	4
18	1
19	2
20	0
21	1
22	2
23	0
24	3
25	4
26	0
27	1
28	0
29	2
30	1
31	1
32	2
33	1
34	1
35	2
36	1
37	1
38	2
39	1
40	0
41	2
42	3
43	3
44	2
45	1
46	1
47	2
48	3
49	3
50	2
51	3
52	0
53	18
54	1
55	2
56	0
57	1
58	2
59	4
60	1
61	2
62	2
63	1
64	2
65	4
66	1
67	2
68	0
69	3
70	2
71	4
72	1
73	2
74	2
75	3
76	2
77	4
78	17
79	18
80	0
81	1
82	0
83	2
84	1
85	1
86	2
87	1
88	1
89	3
90	1
91	0
92	2
93	1
94	1
95	16
96	1
97	1
98	2
99	2
100	0
101	2
102	4
103	-1
104	16
105	3
106	15
107	2
108	1
109	1
110	2
111	1
112	0
113	3
114	3
115	3
116	2
117	1
118	1
119	16
120	1

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	2
6	1
7	2
8	0
9	1
10	0
11	2
12	1
13	0
14	2
15	3
16	0
17	4
18	1
19	2
20	0
21	1
22	2
23	0
24	3
25	4
26	0
27	1
28	0
29	2
30	1
31	1
32	2
33	1
34	1
35	2
36	1
37	1
38	2
39	1
40	0
41	2
42	3
43	3
44	2
45	1
46	1
47	2
48	3
49	3
50	2
51	3
52	0
53	18
54	1
55	2
56	0
57	1
58	2
59	4
60	1
61	2
62	2
63	1
64	2
65	4
66	1
67	2
68	0
69	3
70	2
71	4
72	1
73	2
74	2
75	3
76	2
77	4
78	17
79	18
80	0
81	1
82	0
83	2
84	1
85	1
86	2
87	1
88	1
89	3
90	1
91	0
92	2
93	1
94	1
95	16
96	1
97	1
98	2
99	2
100	0
101	2
102	4
103	-1
104	16
105	3
106	15
107	2
108	1
109	1
110	2
111	1
112	0
113	3
114	3
115	3
116	2
117	1
118	1
119	16
120	1