A001953 - cp's OEIS frontend

A001953 a(n) = floor((n + 1/2) * sqrt(2)).

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

[0, 2, 3, 4, 6, 7, 9, 10, 12, 13, 14, 16, 17, 19, 20, 21, 23, 24, 26, 27, 28, 30, 31, 33, 34, 36, 37, 38, 40, 41, 43, 44, 45, 47, 48, 50, 51, 53, 54, 55, 57, 58, 60, 61, 62, 64, 65, 67, 68, 70, 71, 72, 74, 75, 77, 78, 79, 81, 82, 84, 85, 86, 88, 89, 91, 92, 94, 95]

cp's OEIS Frontend

A001953 a(n) = floor((n + 1/2) * sqrt(2)).

Table of values

List of values

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

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

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