A181590 - cp's OEIS frontend

A181590 Least value of n such that |P(n) - 1/e| < 10^(-i), i=1,2,3... . P(n)=floor(n!/e + 1/2)/n! is the probability of a random permutation on n objects be a derangement.

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

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

cp's OEIS Frontend

A181590 Least value of n such that |P(n) - 1/e| < 10^(-i), i=1,2,3... . P(n)=floor(n!/e + 1/2)/n! is the probability of a random permutation on n objects be a derangement.

Table of values

List of values

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

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

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