A347420 - cp's OEIS frontend

A347420 Number of partitions of [n] where the first k elements are marked (0 <= k <= n) and at least k blocks contain their own index.

n	a(n)
0	1
1	2
2	5
3	14
4	45
5	164
6	667
7	2986
8	14551
9	76498
10	430747
11	2582448
12	16403029
13	109918746
14	774289169
15	5715471606
16	44087879137
17	354521950932
18	2965359744447
19	25749723493074
20	231719153184019
21	2157494726318234
22	20753996174222511
23	205985762120971168
24	2106795754056142537

[1, 2, 5, 14, 45, 164, 667, 2986, 14551, 76498, 430747, 2582448, 16403029, 109918746, 774289169, 5715471606, 44087879137, 354521950932, 2965359744447, 25749723493074, 231719153184019, 2157494726318234, 20753996174222511, 205985762120971168, 2106795754056142537]

cp's OEIS Frontend

A347420 Number of partitions of [n] where the first k elements are marked (0 <= k <= n) and at least k blocks contain their own index.

Table of values

List of values