A144090 - cp's OEIS frontend

A144090 Triangle read by rows: T(n,k) is the number of partial bijections (or subpermutations) of an n-element set of height k (height(alpha) = |Im(alpha)|) and with exactly 1 fixed point.

n	a(n)
1	1
2	2
3	0
4	3
5	6
6	3
7	4
8	24
9	36
10	8
11	5
12	60
13	210
14	220
15	45
16	6
17	120
18	780
19	1920
20	1590
21	264
22	7
23	210
24	2205
25	9940
26	19005
27	12978
28	1855
29	8
30	336
31	5208
32	37520
33	130200
34	203952
35	118664
36	14832
37	9
38	504
39	10836
40	114408
41	630630
42	1783656
43	2369556
44	1201464
45	133497

[1, 2, 0, 3, 6, 3, 4, 24, 36, 8, 5, 60, 210, 220, 45, 6, 120, 780, 1920, 1590, 264, 7, 210, 2205, 9940, 19005, 12978, 1855, 8, 336, 5208, 37520, 130200, 203952, 118664, 14832, 9, 504, 10836, 114408, 630630, 1783656, 2369556, 1201464, 133497]

cp's OEIS Frontend

A144090 Triangle read by rows: T(n,k) is the number of partial bijections (or subpermutations) of an n-element set of height k (height(alpha) = |Im(alpha)|) and with exactly 1 fixed point.

Table of values

List of values