A350078 - cp's OEIS frontend

A350078 Irregular triangle read by rows: T(n,k) is the number of endofunctions on [n] whose second-largest component has size exactly k; n >= 0, 0 <= k <= floor(n/2).

n	a(n)
0	1
1	1
2	3
3	1
4	17
5	10
6	142
7	87
8	27
9	1569
10	911
11	645
12	21576
13	11930
14	10260
15	2890
16	355081
17	189610
18	174132
19	104720
20	6805296
21	3543617
22	3229275
23	2493288
24	705740
25	148869153
26	76060087
27	67843521
28	60223520
29	34424208
30	3660215680
31	1842497914
32	1605373560
33	1530575960
34	1051155000
35	310181886

[1, 1, 3, 1, 17, 10, 142, 87, 27, 1569, 911, 645, 21576, 11930, 10260, 2890, 355081, 189610, 174132, 104720, 6805296, 3543617, 3229275, 2493288, 705740, 148869153, 76060087, 67843521, 60223520, 34424208, 3660215680, 1842497914, 1605373560, 1530575960, 1051155000, 310181886]

cp's OEIS Frontend

A350078 Irregular triangle read by rows: T(n,k) is the number of endofunctions on [n] whose second-largest component has size exactly k; n >= 0, 0 <= k <= floor(n/2).

Table of values

List of values