A360100 - cp's OEIS frontend

A360100 a(n) = Sum_{k=0..n} binomial(n+2k-1,n-k) Catalan(k).

n	a(n)
0	1
1	1
2	5
3	23
4	111
5	562
6	2952
7	15948
8	88076
9	495077
10	2823293
11	16295020
12	95007654
13	558765743
14	3310999269
15	19748462718
16	118471172054
17	714355994997
18	4327148812557
19	26319195869861
20	160677354596769
21	984236344800234
22	6047526697800992
23	37262944840704171

[1, 1, 5, 23, 111, 562, 2952, 15948, 88076, 495077, 2823293, 16295020, 95007654, 558765743, 3310999269, 19748462718, 118471172054, 714355994997, 4327148812557, 26319195869861, 160677354596769, 984236344800234, 6047526697800992, 37262944840704171]

cp's OEIS Frontend

A360100 a(n) = Sum_{k=0..n} binomial(n+2k-1,n-k) Catalan(k).

Table of values

List of values

cp's OEIS Frontend

A360100 a(n) = Sum_{k=0..n} binomial(n+2*k-1,n-k) * Catalan(k).

Table of values

List of values

A360100 a(n) = Sum_{k=0..n} binomial(n+2k-1,n-k) Catalan(k).