A132228 - cp's OEIS frontend

A132228 a(n) = Sum_{k=0..n} C(n-1,k)^2a(k)a(n-k-1) for n>0 with a(0)=1.

n	a(n)
0	1
1	1
2	2
3	8
4	52
5	504
6	6808
7	122304
8	2820048
9	81183200
10	2853990496
11	120321094656
12	5991955466560
13	347996920977664
14	23312947041336960
15	1784445116557881344
16	154767015393810489600
17	15098457734490931766784

[1, 1, 2, 8, 52, 504, 6808, 122304, 2820048, 81183200, 2853990496, 120321094656, 5991955466560, 347996920977664, 23312947041336960, 1784445116557881344, 154767015393810489600, 15098457734490931766784]

cp's OEIS Frontend

A132228 a(n) = Sum_{k=0..n} C(n-1,k)^2a(k)a(n-k-1) for n>0 with a(0)=1.

Table of values

List of values

cp's OEIS Frontend

A132228 a(n) = Sum_{k=0..n} C(n-1,k)^2*a(k)*a(n-k-1) for n>0 with a(0)=1.

Table of values

List of values

A132228 a(n) = Sum_{k=0..n} C(n-1,k)^2a(k)a(n-k-1) for n>0 with a(0)=1.