A258703 - cp's OEIS frontend

A258703 a(n) = floor(n/sqrt(2) - 1/2).

n	a(n)
1	0
2	0
3	1
4	2
5	3
6	3
7	4
8	5
9	5
10	6
11	7
12	7
13	8
14	9
15	10
16	10
17	11
18	12
19	12
20	13
21	14
22	15
23	15
24	16
25	17
26	17
27	18
28	19
29	20
30	20
31	21
32	22
33	22
34	23
35	24
36	24
37	25
38	26
39	27
40	27
41	28
42	29
43	29
44	30
45	31
46	32
47	32
48	33
49	34
50	34
51	35
52	36
53	36
54	37
55	38
56	39
57	39
58	40
59	41
60	41
61	42
62	43
63	44
64	44
65	45
66	46
67	46
68	47
69	48
70	48
71	49
72	50
73	51
74	51
75	52
76	53
77	53

[0, 0, 1, 2, 3, 3, 4, 5, 5, 6, 7, 7, 8, 9, 10, 10, 11, 12, 12, 13, 14, 15, 15, 16, 17, 17, 18, 19, 20, 20, 21, 22, 22, 23, 24, 24, 25, 26, 27, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 34, 35, 36, 36, 37, 38, 39, 39, 40, 41, 41, 42, 43, 44, 44, 45, 46, 46, 47, 48, 48, 49, 50, 51, 51, 52, 53, 53]

cp's OEIS Frontend

A258703 a(n) = floor(n/sqrt(2) - 1/2).

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	2
5	3
6	3
7	4
8	5
9	5
10	6
11	7
12	7
13	8
14	9
15	10
16	10
17	11
18	12
19	12
20	13
21	14
22	15
23	15
24	16
25	17
26	17
27	18
28	19
29	20
30	20
31	21
32	22
33	22
34	23
35	24
36	24
37	25
38	26
39	27
40	27
41	28
42	29
43	29
44	30
45	31
46	32
47	32
48	33
49	34
50	34
51	35
52	36
53	36
54	37
55	38
56	39
57	39
58	40
59	41
60	41
61	42
62	43
63	44
64	44
65	45
66	46
67	46
68	47
69	48
70	48
71	49
72	50
73	51
74	51
75	52
76	53
77	53

n	a(n)
1	0
2	0
3	1
4	2
5	3
6	3
7	4
8	5
9	5
10	6
11	7
12	7
13	8
14	9
15	10
16	10
17	11
18	12
19	12
20	13
21	14
22	15
23	15
24	16
25	17
26	17
27	18
28	19
29	20
30	20
31	21
32	22
33	22
34	23
35	24
36	24
37	25
38	26
39	27
40	27
41	28
42	29
43	29
44	30
45	31
46	32
47	32
48	33
49	34
50	34
51	35
52	36
53	36
54	37
55	38
56	39
57	39
58	40
59	41
60	41
61	42
62	43
63	44
64	44
65	45
66	46
67	46
68	47
69	48
70	48
71	49
72	50
73	51
74	51
75	52
76	53
77	53

n	a(n)
1	0
2	0
3	1
4	2
5	3
6	3
7	4
8	5
9	5
10	6
11	7
12	7
13	8
14	9
15	10
16	10
17	11
18	12
19	12
20	13
21	14
22	15
23	15
24	16
25	17
26	17
27	18
28	19
29	20
30	20
31	21
32	22
33	22
34	23
35	24
36	24
37	25
38	26
39	27
40	27
41	28
42	29
43	29
44	30
45	31
46	32
47	32
48	33
49	34
50	34
51	35
52	36
53	36
54	37
55	38
56	39
57	39
58	40
59	41
60	41
61	42
62	43
63	44
64	44
65	45
66	46
67	46
68	47
69	48
70	48
71	49
72	50
73	51
74	51
75	52
76	53
77	53