A248631 - cp's OEIS frontend

A248631 Least k such that 3/2 - sum{(h^2)/3^h, h = 1..k} < 1/2^n.

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

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

cp's OEIS Frontend

A248631 Least k such that 3/2 - sum{(h^2)/3^h, h = 1..k} < 1/2^n.

Table of values

List of values

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

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

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