A337727 - cp's OEIS frontend

A337727 a(n) = (4n)! Sum_{k=0..n} 1 / (4*k)!.

n	a(n)
0	1
1	25
2	42001
3	498971881
4	21795091762081
5	2534333270094778681
6	646315807872650838343345
7	317599587988620621961919733001
8	274101148417699141578015206369183041
9	387502275541069630431671657548241448722521
10	849931991080760484603611346800010863970028660561

[1, 25, 42001, 498971881, 21795091762081, 2534333270094778681, 646315807872650838343345, 317599587988620621961919733001, 274101148417699141578015206369183041, 387502275541069630431671657548241448722521, 849931991080760484603611346800010863970028660561]

cp's OEIS Frontend

A337727 a(n) = (4n)! Sum_{k=0..n} 1 / (4*k)!.

Table of values

List of values

cp's OEIS Frontend

A337727 a(n) = (4*n)! * Sum_{k=0..n} 1 / (4*k)!.

Table of values

List of values

A337727 a(n) = (4n)! Sum_{k=0..n} 1 / (4*k)!.