A381515 - cp's OEIS frontend

A381515 a(n) = Sum_{j=1..n} Stirling2(n-1,j-1) * a(n-j) for n>=1, starting with a(0) = 1.

n	a(n)
0	1
1	1
2	1
3	2
4	5
5	16
6	71
7	432
8	3446
9	35805
10	493247
11	9055817
12	219034736
13	6924788187
14	287364757172
15	15747872749912
16	1138063678023858
17	107917571120653077
18	13417659577126888599
19	2194989270698166806727
20	473329783091262653789042
21	134287984058139116699933228

[1, 1, 1, 2, 5, 16, 71, 432, 3446, 35805, 493247, 9055817, 219034736, 6924788187, 287364757172, 15747872749912, 1138063678023858, 107917571120653077, 13417659577126888599, 2194989270698166806727, 473329783091262653789042, 134287984058139116699933228]

cp's OEIS Frontend

A381515 a(n) = Sum_{j=1..n} Stirling2(n-1,j-1) * a(n-j) for n>=1, starting with a(0) = 1.

Table of values

List of values