A125143 - cp's OEIS frontend

A125143 Almkvist-Zudilin numbers: Sum_{k=0..n} (-1)^(n-k) * ((3^(n-3k) (3k)!) / (k!)^3) binomial(n,3k) binomial(n+k,k).

n	a(n)
0	1
1	-3
2	9
3	-3
4	-279
5	2997
6	-19431
7	65853
8	292329
9	-7202523
10	69363009
11	-407637387
12	702049401
13	17222388453
14	-261933431751
15	2181064727997
16	-10299472204311
17	-15361051476987
18	900537860383569
19	-10586290198314843
20	74892552149042721
21	-235054958584593843

[1, -3, 9, -3, -279, 2997, -19431, 65853, 292329, -7202523, 69363009, -407637387, 702049401, 17222388453, -261933431751, 2181064727997, -10299472204311, -15361051476987, 900537860383569, -10586290198314843, 74892552149042721, -235054958584593843]

cp's OEIS Frontend

A125143 Almkvist-Zudilin numbers: Sum_{k=0..n} (-1)^(n-k) * ((3^(n-3k) (3k)!) / (k!)^3) binomial(n,3k) binomial(n+k,k).

Table of values

List of values

cp's OEIS Frontend

A125143 Almkvist-Zudilin numbers: Sum_{k=0..n} (-1)^(n-k) * ((3^(n-3*k) * (3*k)!) / (k!)^3) * binomial(n,3*k) * binomial(n+k,k).

Table of values

List of values

A125143 Almkvist-Zudilin numbers: Sum_{k=0..n} (-1)^(n-k) * ((3^(n-3k) (3k)!) / (k!)^3) binomial(n,3k) binomial(n+k,k).