A152104 - cp's OEIS frontend

A152104 Quartic product sequence: a(n) = 2^nProduct_{k=1..(n-1)/2} (1 + mcos(kPi/n)^2 + qcos(k*Pi/n)^4), with m=6, q=4.

n	a(n)
0	1
1	2
2	4
3	22
4	80
5	342
6	1364
7	5602
8	22720
9	92642
10	376884
11	1534742
12	6247120
13	25433302
14	103536164
15	421498242
16	1715905280
17	6985435522
18	28437573604
19	115768943702
20	471293442000
21	1918628145302
22	7810704140404
23	31797251383522

[1, 2, 4, 22, 80, 342, 1364, 5602, 22720, 92642, 376884, 1534742, 6247120, 25433302, 103536164, 421498242, 1715905280, 6985435522, 28437573604, 115768943702, 471293442000, 1918628145302, 7810704140404, 31797251383522]

cp's OEIS Frontend

A152104 Quartic product sequence: a(n) = 2^nProduct_{k=1..(n-1)/2} (1 + mcos(kPi/n)^2 + qcos(k*Pi/n)^4), with m=6, q=4.

Table of values

List of values

cp's OEIS Frontend

A152104 Quartic product sequence: a(n) = 2^n*Product_{k=1..(n-1)/2} (1 + m*cos(k*Pi/n)^2 + q*cos(k*Pi/n)^4), with m=6, q=4.

Table of values

List of values

A152104 Quartic product sequence: a(n) = 2^nProduct_{k=1..(n-1)/2} (1 + mcos(kPi/n)^2 + qcos(k*Pi/n)^4), with m=6, q=4.