A192481 - cp's OEIS frontend

A192481 a(n) = Sum_{i=1..n-1} (2^iC(i)-a(i)) (2^(n-i)*C(n-i)-a(n-i)), a(1)=1, where C(i)=A000108(i-1) are Catalan numbers.

n	a(n)
1	1
2	1
3	6
4	29
5	162
6	978
7	6156
8	40061
9	267338
10	1819238
11	12576692
12	88079378
13	623581332
14	4455663876
15	32090099352
16	232711721757
17	1697799727066
18	12452943237342
19	91774314536100
20	679234371006982
21	5046438870909244
22	37623611703611452
23	281391143518722728

[1, 1, 6, 29, 162, 978, 6156, 40061, 267338, 1819238, 12576692, 88079378, 623581332, 4455663876, 32090099352, 232711721757, 1697799727066, 12452943237342, 91774314536100, 679234371006982, 5046438870909244, 37623611703611452, 281391143518722728]

cp's OEIS Frontend

A192481 a(n) = Sum_{i=1..n-1} (2^iC(i)-a(i)) (2^(n-i)*C(n-i)-a(n-i)), a(1)=1, where C(i)=A000108(i-1) are Catalan numbers.

Table of values

List of values

cp's OEIS Frontend

A192481 a(n) = Sum_{i=1..n-1} (2^i*C(i)-a(i)) * (2^(n-i)*C(n-i)-a(n-i)), a(1)=1, where C(i)=A000108(i-1) are Catalan numbers.

Table of values

List of values

A192481 a(n) = Sum_{i=1..n-1} (2^iC(i)-a(i)) (2^(n-i)*C(n-i)-a(n-i)), a(1)=1, where C(i)=A000108(i-1) are Catalan numbers.