A170912 - cp's OEIS frontend

A170912 Write cos(x) = Product_{n >= 1} (1 + g_nx^(2n)); a(n) = numerator(g_n).

n	a(n)
1	-1
2	1
3	7
4	131
5	1843
6	97261
7	4683059
8	1331727679
9	568285777
10	9521655609199
11	175554688130609
12	11334988388673161
13	3457026400678609391
14	6594042537777612027841
15	249248595232521829462213
16	268938575250382935485761673113
17	3929672369519648081411955883
18	4719016202742955262333630268611

[-1, 1, 7, 131, 1843, 97261, 4683059, 1331727679, 568285777, 9521655609199, 175554688130609, 11334988388673161, 3457026400678609391, 6594042537777612027841, 249248595232521829462213, 268938575250382935485761673113, 3929672369519648081411955883, 4719016202742955262333630268611]

cp's OEIS Frontend

A170912 Write cos(x) = Product_{n >= 1} (1 + g_nx^(2n)); a(n) = numerator(g_n).

Table of values

List of values

cp's OEIS Frontend

A170912 Write cos(x) = Product_{n >= 1} (1 + g_n*x^(2*n)); a(n) = numerator(g_n).

Table of values

List of values

A170912 Write cos(x) = Product_{n >= 1} (1 + g_nx^(2n)); a(n) = numerator(g_n).