A385671 - cp's OEIS frontend

A385671 a(n) = Sum_{k=0..n} 2^k * 3^(n-k) * binomial(4n+1,k) binomial(4*n-k,n-k).

n	a(n)
0	1
1	22
2	774
3	30458
4	1260886
5	53731512
6	2333065354
7	102643195068
8	4559878830006
9	204091261040552
10	9189096061165784
11	415734554486178378
12	18884084064916032026
13	860673634902720476392
14	39339618388269633525564
15	1802605962076744803396888
16	82777622289467318635747446

[1, 22, 774, 30458, 1260886, 53731512, 2333065354, 102643195068, 4559878830006, 204091261040552, 9189096061165784, 415734554486178378, 18884084064916032026, 860673634902720476392, 39339618388269633525564, 1802605962076744803396888, 82777622289467318635747446]

cp's OEIS Frontend

A385671 a(n) = Sum_{k=0..n} 2^k * 3^(n-k) * binomial(4n+1,k) binomial(4*n-k,n-k).

Table of values

List of values

cp's OEIS Frontend

A385671 a(n) = Sum_{k=0..n} 2^k * 3^(n-k) * binomial(4*n+1,k) * binomial(4*n-k,n-k).

Table of values

List of values

A385671 a(n) = Sum_{k=0..n} 2^k * 3^(n-k) * binomial(4n+1,k) binomial(4*n-k,n-k).