A378461 - cp's OEIS frontend

A378461 a(n) = Sum_{k=0..n} binomial(n+k-1,k) * binomial(2n+2k-1,n-k).

n	a(n)
0	1
1	2
2	16
3	137
4	1216
5	11057
6	102229
7	956601
8	9032680
9	85893860
10	821402341
11	7891371303
12	76105710253
13	736364519399
14	7144586617597
15	69487754788517
16	677259385478616
17	6613163312601491
18	64681617534027028
19	633569272646345064
20	6214190349161222941
21	61023489213944162889

[1, 2, 16, 137, 1216, 11057, 102229, 956601, 9032680, 85893860, 821402341, 7891371303, 76105710253, 736364519399, 7144586617597, 69487754788517, 677259385478616, 6613163312601491, 64681617534027028, 633569272646345064, 6214190349161222941, 61023489213944162889]

cp's OEIS Frontend

A378461 a(n) = Sum_{k=0..n} binomial(n+k-1,k) * binomial(2n+2k-1,n-k).

Table of values

List of values

cp's OEIS Frontend

A378461 a(n) = Sum_{k=0..n} binomial(n+k-1,k) * binomial(2*n+2*k-1,n-k).

Table of values

List of values

A378461 a(n) = Sum_{k=0..n} binomial(n+k-1,k) * binomial(2n+2k-1,n-k).