A170913 - cp's OEIS frontend

A170913 Write cos(x) = Product_{n>=1} (1 + g_nx^(2n)); a(n) = denominator(g_n).

n	a(n)
1	2
2	24
3	360
4	13440
5	453600
6	47900160
7	5448643200
8	2988969984000
9	3126159036000
10	101370917007360000
11	4390627842881280000
12	552984315270266880000
13	393839317506450816000000
14	1465809349094778175488000000
15	129517997955171415349760000000
16	263130836933693530167218012160000000

[2, 24, 360, 13440, 453600, 47900160, 5448643200, 2988969984000, 3126159036000, 101370917007360000, 4390627842881280000, 552984315270266880000, 393839317506450816000000, 1465809349094778175488000000, 129517997955171415349760000000, 263130836933693530167218012160000000]

cp's OEIS Frontend

A170913 Write cos(x) = Product_{n>=1} (1 + g_nx^(2n)); a(n) = denominator(g_n).

Table of values

List of values

cp's OEIS Frontend

A170913 Write cos(x) = Product_{n>=1} (1 + g_n*x^(2*n)); a(n) = denominator(g_n).

Table of values

List of values

A170913 Write cos(x) = Product_{n>=1} (1 + g_nx^(2n)); a(n) = denominator(g_n).