A378005 - cp's OEIS frontend

A378005 Number of permutations (p(1),p(2),...,p(n)) of (1,2,...,n) such that p(i)-i is in {-2,4,5} for all i=1,...,n.

n	a(n)
0	1
1	0
2	0
3	0
4	0
5	0
6	1
7	1
8	0
9	0
10	0
11	0
12	1
13	3
14	1
15	0
16	0
17	0
18	1
19	6
20	6
21	1
22	0
23	0
24	1
25	10
26	20
27	10
28	1
29	1
30	1
31	15
32	50
33	50
34	15
35	6
36	7
37	21
38	105
39	175
40	105
41	36
42	42
43	49
44	196
45	490
46	490
47	231
48	183
49	217
50	392
51	1176
52	1764
53	1246
54	785
55	946
56	1141
57	2646
58	5292
59	5418
60	3613
61	3664
62	4390
63	6601
64	14112
65	19614

[1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 3, 1, 0, 0, 0, 1, 6, 6, 1, 0, 0, 1, 10, 20, 10, 1, 1, 1, 15, 50, 50, 15, 6, 7, 21, 105, 175, 105, 36, 42, 49, 196, 490, 490, 231, 183, 217, 392, 1176, 1764, 1246, 785, 946, 1141, 2646, 5292, 5418, 3613, 3664, 4390, 6601, 14112, 19614]

cp's OEIS Frontend

A378005 Number of permutations (p(1),p(2),...,p(n)) of (1,2,...,n) such that p(i)-i is in {-2,4,5} for all i=1,...,n.

Table of values

List of values