A345646 - cp's OEIS frontend

A345646 a(n) = Sum_{k=0..n} (4n)! / (k! (n-k)!)^4.

n	a(n)
0	1
1	48
2	45360
3	60614400
4	114144030000
5	249344297250048
6	609148118181867264
7	1604207350254328934400
8	4471935609925802450718000
9	13022708340511827298941600000
10	39267738740263529465273799855360
11	121811974529188978353365962361671680
12	386880842128109815466159332537704902400

[1, 48, 45360, 60614400, 114144030000, 249344297250048, 609148118181867264, 1604207350254328934400, 4471935609925802450718000, 13022708340511827298941600000, 39267738740263529465273799855360, 121811974529188978353365962361671680, 386880842128109815466159332537704902400]

cp's OEIS Frontend

A345646 a(n) = Sum_{k=0..n} (4n)! / (k! (n-k)!)^4.

Table of values

List of values

cp's OEIS Frontend

A345646 a(n) = Sum_{k=0..n} (4*n)! / (k! * (n-k)!)^4.

Table of values

List of values

A345646 a(n) = Sum_{k=0..n} (4n)! / (k! (n-k)!)^4.