A376125 - cp's OEIS frontend

A376125 a(n) = 1 + Sum_{k=0..n-1} (2k+1) a(k) * a(n-k-1).

n	a(n)
0	1
1	2
2	9
3	67
4	681
5	8556
6	126253
7	2124340
8	39991633
9	831271006
10	18893178381
11	465972248083
12	12394713108433
13	353750057246236
14	10784915257548041
15	349874160411051511
16	12036066260440602401
17	437714593034154481686
18	16780944423208533034861
19	676482338975579658794689

[1, 2, 9, 67, 681, 8556, 126253, 2124340, 39991633, 831271006, 18893178381, 465972248083, 12394713108433, 353750057246236, 10784915257548041, 349874160411051511, 12036066260440602401, 437714593034154481686, 16780944423208533034861, 676482338975579658794689]

cp's OEIS Frontend

A376125 a(n) = 1 + Sum_{k=0..n-1} (2k+1) a(k) * a(n-k-1).

Table of values

List of values

cp's OEIS Frontend

A376125 a(n) = 1 + Sum_{k=0..n-1} (2*k+1) * a(k) * a(n-k-1).

Table of values

List of values

A376125 a(n) = 1 + Sum_{k=0..n-1} (2k+1) a(k) * a(n-k-1).