A382368 - cp's OEIS frontend

A382368 Expansion of 1/( 1 - 4 * Sum_{k>=0} x^(3^k) / (1 - x^(3^k)) )^(1/2).

n	a(n)
0	1
1	2
2	8
3	36
4	162
5	750
6	3536
7	16858
8	81100
9	392914
10	1914268
11	9369190
12	46032396
13	226898158
14	1121510176
15	5556731592
16	27589816042
17	137240945530
18	683808343416
19	3412128301538
20	17048743841882
21	85286538527304
22	427112389604968
23	2141096012912290
24	10743017708448232

[1, 2, 8, 36, 162, 750, 3536, 16858, 81100, 392914, 1914268, 9369190, 46032396, 226898158, 1121510176, 5556731592, 27589816042, 137240945530, 683808343416, 3412128301538, 17048743841882, 85286538527304, 427112389604968, 2141096012912290, 10743017708448232]

cp's OEIS Frontend

A382368 Expansion of 1/( 1 - 4 * Sum_{k>=0} x^(3^k) / (1 - x^(3^k)) )^(1/2).

Table of values

List of values