A376111 - cp's OEIS frontend

A376111 a(0) = 1; a(n) = Sum_{k=1..n} (2^k-1) * a(k-1) * a(n-k).

n	a(n)
0	1
1	1
2	4
3	35
4	600
5	19942
6	1299768
7	167796051
8	43131308656
9	22127283690338
10	22680691426392504
11	46472849736334410494
12	190399379929624643874384
13	1559942353285454499773312748
14	25559656412925984160985399396784
15	837564388804449970974724247002202883

[1, 1, 4, 35, 600, 19942, 1299768, 167796051, 43131308656, 22127283690338, 22680691426392504, 46472849736334410494, 190399379929624643874384, 1559942353285454499773312748, 25559656412925984160985399396784, 837564388804449970974724247002202883]

cp's OEIS Frontend

A376111 a(0) = 1; a(n) = Sum_{k=1..n} (2^k-1) * a(k-1) * a(n-k).

Table of values

List of values