A317275 - cp's OEIS frontend

A317275 a(1) = 1; a(n) = Sum_{k=1..n-1} |Stirling1(n-1,k)|a(k)a(n-k).

n	a(n)
1	1
2	1
3	2
4	9
5	97
6	3105
7	409318
8	301069244
9	1523141657289
10	61447697339843710
11	22299766257043761657829
12	80922067241038150103930448880
13	3230152742688615187688660954252643194
14	1547248455508510864175770056662224501358437847

[1, 1, 2, 9, 97, 3105, 409318, 301069244, 1523141657289, 61447697339843710, 22299766257043761657829, 80922067241038150103930448880, 3230152742688615187688660954252643194, 1547248455508510864175770056662224501358437847]

cp's OEIS Frontend

A317275 a(1) = 1; a(n) = Sum_{k=1..n-1} |Stirling1(n-1,k)|a(k)a(n-k).

Table of values

List of values

cp's OEIS Frontend

A317275 a(1) = 1; a(n) = Sum_{k=1..n-1} |Stirling1(n-1,k)|*a(k)*a(n-k).

Table of values

List of values

A317275 a(1) = 1; a(n) = Sum_{k=1..n-1} |Stirling1(n-1,k)|a(k)a(n-k).