A382333 - cp's OEIS frontend

A382333 Expansion of ( 1 + 4 * Sum_{k>=0} x^(2^k)/(1 - x^(2^k)) )^(1/2).

n	a(n)
0	1
1	2
2	2
3	-2
4	8
5	-10
6	6
7	26
8	-108
9	258
10	-342
11	-194
12	2700
13	-8994
14	17830
15	-12878
16	-61910
17	322110
18	-860106
19	1284546
20	571880
21	-10749654
22	38883554
23	-82867578
24	68869212
25	286234558
26	-1619591538
27	4559780610
28	-7250287740
29	-2206074398
30	59250601986
31	-225063455922

[1, 2, 2, -2, 8, -10, 6, 26, -108, 258, -342, -194, 2700, -8994, 17830, -12878, -61910, 322110, -860106, 1284546, 571880, -10749654, 38883554, -82867578, 68869212, 286234558, -1619591538, 4559780610, -7250287740, -2206074398, 59250601986, -225063455922]

cp's OEIS Frontend

A382333 Expansion of ( 1 + 4 * Sum_{k>=0} x^(2^k)/(1 - x^(2^k)) )^(1/2).

Table of values

List of values