A049474 - cp's OEIS frontend

A049474 a(n) = ceiling(n/sqrt(2)).

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

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

cp's OEIS Frontend

A049474 a(n) = ceiling(n/sqrt(2)).

Table of values

List of values

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

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

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