A377763 - cp's OEIS frontend

A377763 Triangular array read by rows. T(n,k) is the number of partial functions f on [n] such that there are exactly k points in [n] that are neither in the domain of f nor in the image of f, n>=0, 0<=k<=n.

n	a(n)
0	1
1	1
2	1
3	6
4	2
5	1
6	42
7	18
8	3
9	1
10	416
11	168
12	36
13	4
14	1
15	5210
16	2080
17	420
18	60
19	5
20	1
21	79212
22	31260
23	6240
24	840
25	90
26	6
27	1
28	1417094
29	554484
30	109410
31	14560
32	1470
33	126
34	7
35	1
36	29168624
37	11336752
38	2217936
39	291760
40	29120
41	2352
42	168
43	8
44	1
45	679100562
46	262517616
47	51015384
48	6653808
49	656460
50	52416
51	3528
52	216
53	9
54	1

[1, 1, 1, 6, 2, 1, 42, 18, 3, 1, 416, 168, 36, 4, 1, 5210, 2080, 420, 60, 5, 1, 79212, 31260, 6240, 840, 90, 6, 1, 1417094, 554484, 109410, 14560, 1470, 126, 7, 1, 29168624, 11336752, 2217936, 291760, 29120, 2352, 168, 8, 1, 679100562, 262517616, 51015384, 6653808, 656460, 52416, 3528, 216, 9, 1]

cp's OEIS Frontend

A377763 Triangular array read by rows. T(n,k) is the number of partial functions f on [n] such that there are exactly k points in [n] that are neither in the domain of f nor in the image of f, n>=0, 0<=k<=n.

Table of values

List of values