A360101 - cp's OEIS frontend

A360101 a(n) = Sum_{k=0..n} binomial(n+4k-1,n-k) Catalan(k).

n	a(n)
0	1
1	1
2	7
3	40
4	234
5	1432
6	9078
7	59113
8	393125
9	2659233
10	18240801
11	126588424
12	887221916
13	6271153060
14	44652824248
15	319990906290
16	2306133322704
17	16703784324239
18	121534039921585
19	887845073567240
20	6509750423778460
21	47888814944642434
22	353362258550740732

[1, 1, 7, 40, 234, 1432, 9078, 59113, 393125, 2659233, 18240801, 126588424, 887221916, 6271153060, 44652824248, 319990906290, 2306133322704, 16703784324239, 121534039921585, 887845073567240, 6509750423778460, 47888814944642434, 353362258550740732]

cp's OEIS Frontend

A360101 a(n) = Sum_{k=0..n} binomial(n+4k-1,n-k) Catalan(k).

Table of values

List of values

cp's OEIS Frontend

A360101 a(n) = Sum_{k=0..n} binomial(n+4*k-1,n-k) * Catalan(k).

Table of values

List of values

A360101 a(n) = Sum_{k=0..n} binomial(n+4k-1,n-k) Catalan(k).