A370761 - cp's OEIS frontend

A370761 Expansion of Product_{k>=1} (1 + 2^(k+1)x^k) (1 + 2^(k-1)*x^k).

n	a(n)
0	1
1	5
2	14
3	70
4	196
5	640
6	2248
7	6480
8	19072
9	56000
10	169792
11	466560
12	1327104
13	3642880
14	10030080
15	27776000
16	74541056
17	199065600
18	531505152
19	1401405440
20	3672801280
21	9674588160
22	25018564608
23	64701071360
24	166363136000
25	426159636480
26	1084287352832
27	2756737761280
28	6979072294912

[1, 5, 14, 70, 196, 640, 2248, 6480, 19072, 56000, 169792, 466560, 1327104, 3642880, 10030080, 27776000, 74541056, 199065600, 531505152, 1401405440, 3672801280, 9674588160, 25018564608, 64701071360, 166363136000, 426159636480, 1084287352832, 2756737761280, 6979072294912]

cp's OEIS Frontend

A370761 Expansion of Product_{k>=1} (1 + 2^(k+1)x^k) (1 + 2^(k-1)*x^k).

Table of values

List of values

cp's OEIS Frontend

A370761 Expansion of Product_{k>=1} (1 + 2^(k+1)*x^k) * (1 + 2^(k-1)*x^k).

Table of values

List of values

A370761 Expansion of Product_{k>=1} (1 + 2^(k+1)x^k) (1 + 2^(k-1)*x^k).