A329021 - cp's OEIS frontend

A329021 a(n) is the constant term in the expansion of ( Sum_{k=1..n} x_k^(2k-1) + x_k^(-(2k-1)) )^(2*n).

n	a(n)
0	1
1	2
2	44
3	4332
4	1012664
5	432457640
6	293661065788
7	290711372717976
8	395320344293410544
9	707125993042984343136
10	1609908874238209683872480
11	4545914321591993313415189408
12	15591582457233317184439165505544
13	63847180690107503874880321918389332

[1, 2, 44, 4332, 1012664, 432457640, 293661065788, 290711372717976, 395320344293410544, 707125993042984343136, 1609908874238209683872480, 4545914321591993313415189408, 15591582457233317184439165505544, 63847180690107503874880321918389332]

cp's OEIS Frontend

A329021 a(n) is the constant term in the expansion of ( Sum_{k=1..n} x_k^(2k-1) + x_k^(-(2k-1)) )^(2*n).

Table of values

List of values

cp's OEIS Frontend

A329021 a(n) is the constant term in the expansion of ( Sum_{k=1..n} x_k^(2*k-1) + x_k^(-(2*k-1)) )^(2*n).

Table of values

List of values

A329021 a(n) is the constant term in the expansion of ( Sum_{k=1..n} x_k^(2k-1) + x_k^(-(2k-1)) )^(2*n).