A350080 - cp's OEIS frontend

A350080 Irregular triangle read by rows: T(n,k) is the number of endofunctions on [n] whose third-largest component has size exactly k; n >= 0, 0 <= k <= floor(n/3).

n	a(n)
0	1
1	1
2	4
3	26
4	1
5	237
6	19
7	2789
8	336
9	40270
10	5981
11	405
12	689450
13	115193
14	18900
15	13657756
16	2459955
17	659505
18	307348641
19	58366045
20	20330163
21	1375640
22	7745565616
23	1530739594
24	623758590
25	99936200
26	216114310994
27	44076571672
28	19795671225
29	5325116720

[1, 1, 4, 26, 1, 237, 19, 2789, 336, 40270, 5981, 405, 689450, 115193, 18900, 13657756, 2459955, 659505, 307348641, 58366045, 20330163, 1375640, 7745565616, 1530739594, 623758590, 99936200, 216114310994, 44076571672, 19795671225, 5325116720]

cp's OEIS Frontend

A350080 Irregular triangle read by rows: T(n,k) is the number of endofunctions on [n] whose third-largest component has size exactly k; n >= 0, 0 <= k <= floor(n/3).

Table of values

List of values