A370338 - cp's OEIS frontend

A370338 Expansion of Product_{n>=1} (1 - 3^(n-1)x^n) (1 + 3^(n-1)*x^n)^2.

n	a(n)
0	1
1	1
2	2
3	11
4	24
5	114
6	297
7	1224
8	3240
9	13230
10	37017
11	138510
12	407754
13	1469664
14	4413366
15	15717969
16	47239200
17	163408266
18	511758000
19	1719152586
20	5348422224
21	18083342907
22	56672868240
23	187301066040
24	594207370746
25	1947548449296
26	6185182455792
27	20263641256656
28	64084643627283

[1, 1, 2, 11, 24, 114, 297, 1224, 3240, 13230, 37017, 138510, 407754, 1469664, 4413366, 15717969, 47239200, 163408266, 511758000, 1719152586, 5348422224, 18083342907, 56672868240, 187301066040, 594207370746, 1947548449296, 6185182455792, 20263641256656, 64084643627283]

cp's OEIS Frontend

A370338 Expansion of Product_{n>=1} (1 - 3^(n-1)x^n) (1 + 3^(n-1)*x^n)^2.

Table of values

List of values

cp's OEIS Frontend

A370338 Expansion of Product_{n>=1} (1 - 3^(n-1)*x^n) * (1 + 3^(n-1)*x^n)^2.

Table of values

List of values

A370338 Expansion of Product_{n>=1} (1 - 3^(n-1)x^n) (1 + 3^(n-1)*x^n)^2.