A353587 - cp's OEIS frontend

A353587 Denominators of coefficients c(n) in product expansion of (tan x)/x = Product_{k>=1} 1 + c(k)*x^(2k).

n	a(n)
1	3
2	15
3	105
4	2835
5	66825
6	3648645
7	383107725
8	97692469875
9	1856156927625
10	5568470782875
11	9056719980433125
12	33283445928091734375
13	1298054391195577640625
14	3952575621190533915703125
15	367589532770719654160390625
16	112527407991036628824609375
17	3842566358093920359949921875

[3, 15, 105, 2835, 66825, 3648645, 383107725, 97692469875, 1856156927625, 5568470782875, 9056719980433125, 33283445928091734375, 1298054391195577640625, 3952575621190533915703125, 367589532770719654160390625, 112527407991036628824609375, 3842566358093920359949921875]

cp's OEIS Frontend

A353587 Denominators of coefficients c(n) in product expansion of (tan x)/x = Product_{k>=1} 1 + c(k)*x^(2k).

Table of values

List of values