A358119 - cp's OEIS frontend

A358119 a(n) = Sum_{j=0..n} (-1)^jbinomial(2n - j, j)c(n - j)c(n - j + 2), where c(n) is the n-th Catalan number.

n	a(n)
0	2
1	3
2	15
3	98
4	750
5	6359
6	57939
7	556896
8	5578764
9	57759397
10	614328561
11	6682078770
12	74071710414
13	834535805445
14	9535609593441
15	110306008352832
16	1289937458160684
17	15231176767392691
18	181406519662622559
19	2177471166182909994
20	26321521760571055830
21	320222147815305416123

[2, 3, 15, 98, 750, 6359, 57939, 556896, 5578764, 57759397, 614328561, 6682078770, 74071710414, 834535805445, 9535609593441, 110306008352832, 1289937458160684, 15231176767392691, 181406519662622559, 2177471166182909994, 26321521760571055830, 320222147815305416123]

cp's OEIS Frontend

A358119 a(n) = Sum_{j=0..n} (-1)^jbinomial(2n - j, j)c(n - j)c(n - j + 2), where c(n) is the n-th Catalan number.

Table of values

List of values

cp's OEIS Frontend

A358119 a(n) = Sum_{j=0..n} (-1)^j*binomial(2*n - j, j)*c(n - j)*c(n - j + 2), where c(n) is the n-th Catalan number.

Table of values

List of values

A358119 a(n) = Sum_{j=0..n} (-1)^jbinomial(2n - j, j)c(n - j)c(n - j + 2), where c(n) is the n-th Catalan number.