A274773 - cp's OEIS frontend

A274773 a(n) = floor(sqrt(2n-1) + 1/2) - abs(2(n-1) - (floor(sqrt(2*n-1) + 1/2))^2) + 1.

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

[1, 1, 3, 1, 3, 3, 1, 3, 5, 3, 1, 3, 5, 5, 3, 1, 3, 5, 7, 5, 3, 1, 3, 5, 7, 7, 5, 3, 1, 3, 5, 7, 9, 7, 5, 3, 1, 3, 5, 7, 9, 9, 7, 5, 3, 1, 3, 5, 7, 9, 11, 9, 7, 5, 3, 1, 3, 5, 7, 9, 11, 11, 9, 7, 5, 3, 1, 3, 5, 7, 9, 11, 13, 11, 9, 7, 5, 3, 1, 3, 5, 7, 9, 11, 13, 13, 11, 9, 7, 5, 3, 1, 3, 5, 7, 9, 11, 13, 15, 13, 11, 9, 7, 5, 3, 1, 3, 5, 7, 9, 11, 13, 15, 15, 13, 11, 9, 7, 5, 3]

cp's OEIS Frontend

A274773 a(n) = floor(sqrt(2n-1) + 1/2) - abs(2(n-1) - (floor(sqrt(2*n-1) + 1/2))^2) + 1.

Table of values

List of values

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

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

cp's OEIS Frontend

A274773 a(n) = floor(sqrt(2*n-1) + 1/2) - abs(2*(n-1) - (floor(sqrt(2*n-1) + 1/2))^2) + 1.

Table of values

List of values

A274773 a(n) = floor(sqrt(2n-1) + 1/2) - abs(2(n-1) - (floor(sqrt(2*n-1) + 1/2))^2) + 1.

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