A073097 - cp's OEIS frontend

A073097 Let x(n) denote the number of 4's among the n first elements of the continued fraction for sum k>=0 1/2^(2^k) (A007400), y(n) the number of 6's and z(n) the number of 2's. Then a(n)=x(n)-y(n)-z(n)-1.

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

[-1, -1, 0, -1, 0, 1, 0, 1, 0, 1, 0, -1, 0, -1, 0, 1, 0, 1, 0, -1, 0, 1, 0, 1, 0, -1, 0, -1, 0, -1, 0, 1, 0, 1, 0, -1, 0, 1, 0, 1, 0, 1, 0, -1, 0, -1, 0, 1, 0, -1, 0, -1, 0, 1, 0, 1, 0, -1, 0, -1, 0, -1, 0, 1, 0, 1, 0, -1, 0, 1, 0, 1, 0, 1, 0, -1, 0, -1, 0, 1, 0, 1, 0, -1, 0, 1, 0, 1, 0, -1, 0, -1, 0, -1, 0, 1, 0, -1, 0, -1]

cp's OEIS Frontend

A073097 Let x(n) denote the number of 4's among the n first elements of the continued fraction for sum k>=0 1/2^(2^k) (A007400), y(n) the number of 6's and z(n) the number of 2's. Then a(n)=x(n)-y(n)-z(n)-1.

Table of values

List of values

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

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

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