A322506 - cp's OEIS frontend

A322506 Factorial expansion of 1/exp(2) = Sum_{n>=1} a(n)/n!.

n	a(n)
1	0
2	0
3	0
4	3
5	1
6	1
7	3
8	0
9	6
10	4
11	7
12	5
13	2
14	9
15	9
16	8
17	10
18	8
19	9
20	1
21	13
22	18
23	1
24	2
25	8
26	15
27	26
28	10
29	22
30	1
31	18
32	9
33	20
34	10
35	2
36	6
37	13
38	19
39	16
40	38
41	38
42	3
43	32
44	5
45	39
46	24
47	7
48	27
49	14
50	41
51	20
52	39
53	32
54	7
55	20
56	35
57	44
58	50
59	24
60	34
61	51
62	14
63	39
64	47
65	49
66	15
67	61
68	54
69	60
70	52
71	34
72	60
73	32
74	72
75	48
76	12
77	67
78	52
79	22
80	48

[0, 0, 0, 3, 1, 1, 3, 0, 6, 4, 7, 5, 2, 9, 9, 8, 10, 8, 9, 1, 13, 18, 1, 2, 8, 15, 26, 10, 22, 1, 18, 9, 20, 10, 2, 6, 13, 19, 16, 38, 38, 3, 32, 5, 39, 24, 7, 27, 14, 41, 20, 39, 32, 7, 20, 35, 44, 50, 24, 34, 51, 14, 39, 47, 49, 15, 61, 54, 60, 52, 34, 60, 32, 72, 48, 12, 67, 52, 22, 48]

cp's OEIS Frontend

A322506 Factorial expansion of 1/exp(2) = Sum_{n>=1} a(n)/n!.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	3
5	1
6	1
7	3
8	0
9	6
10	4
11	7
12	5
13	2
14	9
15	9
16	8
17	10
18	8
19	9
20	1
21	13
22	18
23	1
24	2
25	8
26	15
27	26
28	10
29	22
30	1
31	18
32	9
33	20
34	10
35	2
36	6
37	13
38	19
39	16
40	38
41	38
42	3
43	32
44	5
45	39
46	24
47	7
48	27
49	14
50	41
51	20
52	39
53	32
54	7
55	20
56	35
57	44
58	50
59	24
60	34
61	51
62	14
63	39
64	47
65	49
66	15
67	61
68	54
69	60
70	52
71	34
72	60
73	32
74	72
75	48
76	12
77	67
78	52
79	22
80	48

n	a(n)
1	0
2	0
3	0
4	3
5	1
6	1
7	3
8	0
9	6
10	4
11	7
12	5
13	2
14	9
15	9
16	8
17	10
18	8
19	9
20	1
21	13
22	18
23	1
24	2
25	8
26	15
27	26
28	10
29	22
30	1
31	18
32	9
33	20
34	10
35	2
36	6
37	13
38	19
39	16
40	38
41	38
42	3
43	32
44	5
45	39
46	24
47	7
48	27
49	14
50	41
51	20
52	39
53	32
54	7
55	20
56	35
57	44
58	50
59	24
60	34
61	51
62	14
63	39
64	47
65	49
66	15
67	61
68	54
69	60
70	52
71	34
72	60
73	32
74	72
75	48
76	12
77	67
78	52
79	22
80	48

n	a(n)
1	0
2	0
3	0
4	3
5	1
6	1
7	3
8	0
9	6
10	4
11	7
12	5
13	2
14	9
15	9
16	8
17	10
18	8
19	9
20	1
21	13
22	18
23	1
24	2
25	8
26	15
27	26
28	10
29	22
30	1
31	18
32	9
33	20
34	10
35	2
36	6
37	13
38	19
39	16
40	38
41	38
42	3
43	32
44	5
45	39
46	24
47	7
48	27
49	14
50	41
51	20
52	39
53	32
54	7
55	20
56	35
57	44
58	50
59	24
60	34
61	51
62	14
63	39
64	47
65	49
66	15
67	61
68	54
69	60
70	52
71	34
72	60
73	32
74	72
75	48
76	12
77	67
78	52
79	22
80	48