A194381 - cp's OEIS frontend

A194381 Numbers m such that Sum_{k=1..m} (<1/2 + k*r> - ) < 0, where r=sqrt(8) and < > denotes fractional part.

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

[1, 2, 3, 7, 8, 9, 13, 14, 15, 19, 20, 21, 25, 26, 27, 31, 32, 33, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 47, 48, 49, 50, 51, 53, 54, 55, 56, 57, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89]

cp's OEIS Frontend

A194381 Numbers m such that Sum_{k=1..m} (<1/2 + k*r> - ) < 0, where r=sqrt(8) and < > denotes fractional part.

Table of values

List of values

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

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

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