A244658 - cp's OEIS frontend

A244658 a(n) = x/(x1-floor(x1)) where x = sqrt(n) - floor(sqrt(n)), x1 = 1/x, a(n) = -1 if division by zero, a(n) = 0 for nonintegers.

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

[-1, 1, 2, -1, 1, 2, 0, 4, -1, 1, 2, 3, 0, 0, 6, -1, 1, 2, 0, 4, 0, 0, 0, 8, -1, 1, 2, 0, 0, 5, 0, 0, 0, 0, 10, -1, 1, 2, 3, 4, 0, 6, 0, 0, 0, 0, 0, 12, -1, 1, 2, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 14, -1, 1, 2, 0, 4, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 16, -1, 1, 2, 3, 0, 0, 6, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 18, -1, 1, 2, 0, 4, 5]

cp's OEIS Frontend

A244658 a(n) = x/(x1-floor(x1)) where x = sqrt(n) - floor(sqrt(n)), x1 = 1/x, a(n) = -1 if division by zero, a(n) = 0 for nonintegers.

Table of values

List of values

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

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

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