A323671 - cp's OEIS frontend

A323671 Number T(n,k) of permutations p of [n] with no fixed points such that |{ j : |p(j)-j| = 1 }| = k; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.

n	a(n)
0	1
1	0
2	0
3	0
4	0
5	1
6	0
7	0
8	2
9	0
10	1
11	2
12	3
13	2
14	1
15	4
16	12
17	14
18	8
19	6
20	0
21	29
22	68
23	82
24	54
25	25
26	6
27	1
28	206
29	496
30	546
31	376
32	170
33	48
34	12
35	0
36	1708
37	3960
38	4349
39	2922
40	1353
41	430
42	98
43	12
44	1
45	15702
46	35816
47	38632
48	26048
49	12084
50	4052
51	982
52	160
53	20
54	0
55	159737
56	358786
57	383523
58	257552
59	120919
60	41508
61	10647
62	1998
63	270
64	20
65	1

[1, 0, 0, 0, 0, 1, 0, 0, 2, 0, 1, 2, 3, 2, 1, 4, 12, 14, 8, 6, 0, 29, 68, 82, 54, 25, 6, 1, 206, 496, 546, 376, 170, 48, 12, 0, 1708, 3960, 4349, 2922, 1353, 430, 98, 12, 1, 15702, 35816, 38632, 26048, 12084, 4052, 982, 160, 20, 0, 159737, 358786, 383523, 257552, 120919, 41508, 10647, 1998, 270, 20, 1]

cp's OEIS Frontend

A323671 Number T(n,k) of permutations p of [n] with no fixed points such that |{ j : |p(j)-j| = 1 }| = k; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.

Table of values

List of values