A144089 - cp's OEIS frontend

A144089 T(n,k) is the number of partial bijections (or subpermutations) of an n-element set of height k (height(alpha) = |Im(alpha)|) and without fixed points.

n	a(n)
0	1
1	1
2	0
3	1
4	2
5	1
6	1
7	6
8	9
9	2
10	1
11	12
12	42
13	44
14	9
15	1
16	20
17	130
18	320
19	265
20	44
21	1
22	30
23	315
24	1420
25	2715
26	1854
27	265
28	1
29	42
30	651
31	4690
32	16275
33	25494
34	14833
35	1854
36	1
37	56
38	1204
39	12712
40	70070
41	198184
42	263284
43	133496
44	14833
45	1
46	72
47	2052
48	29904
49	240534
50	1076544
51	2573508

[1, 1, 0, 1, 2, 1, 1, 6, 9, 2, 1, 12, 42, 44, 9, 1, 20, 130, 320, 265, 44, 1, 30, 315, 1420, 2715, 1854, 265, 1, 42, 651, 4690, 16275, 25494, 14833, 1854, 1, 56, 1204, 12712, 70070, 198184, 263284, 133496, 14833, 1, 72, 2052, 29904, 240534, 1076544, 2573508]

cp's OEIS Frontend

A144089 T(n,k) is the number of partial bijections (or subpermutations) of an n-element set of height k (height(alpha) = |Im(alpha)|) and without fixed points.

Table of values

List of values