A360057 - cp's OEIS frontend

A360057 a(n) = Sum_{k=0..n} binomial(n+4k+4,n-k) Catalan(k).

n	a(n)
0	1
1	6
2	27
3	125
4	644
5	3643
6	21974
7	138395
8	898695
9	5970927
10	40386209
11	277127148
12	1924349756
13	13496536510
14	95467320600
15	680260392219
16	4878382821267
17	35182209381590
18	255000022472565
19	1856501085686340
20	13570366067586294
21	99554601986349471
22	732756800760507312

[1, 6, 27, 125, 644, 3643, 21974, 138395, 898695, 5970927, 40386209, 277127148, 1924349756, 13496536510, 95467320600, 680260392219, 4878382821267, 35182209381590, 255000022472565, 1856501085686340, 13570366067586294, 99554601986349471, 732756800760507312]

cp's OEIS Frontend

A360057 a(n) = Sum_{k=0..n} binomial(n+4k+4,n-k) Catalan(k).

Table of values

List of values

cp's OEIS Frontend

A360057 a(n) = Sum_{k=0..n} binomial(n+4*k+4,n-k) * Catalan(k).

Table of values

List of values

A360057 a(n) = Sum_{k=0..n} binomial(n+4k+4,n-k) Catalan(k).