A135069 - cp's OEIS frontend

A135069 a(n) = [x^(2^n+n-1)] (x + x^2 + x^4 + x^8 + ... + x^(2^n))^n / n for n>=1.

n	a(n)
1	1
2	1
3	2
4	4
5	18
6	106
7	816
8	4292
9	59698
10	594178
11	9066286
12	87498566
13	1784642080
14	20988667064
15	380829128200
16	4301687654136
17	167344151387170
18	2948286694377154
19	81332961594822202
20	1301097749397343978
21	48612398553534689114
22	904790963165201870170
23	26316129785192975106006
24	464241023562098660374014
25	24858620479726716329900336
26	556565016155501619684118816
27	20303230470838234228146518916
28	424323532462258172880428842252

[1, 1, 2, 4, 18, 106, 816, 4292, 59698, 594178, 9066286, 87498566, 1784642080, 20988667064, 380829128200, 4301687654136, 167344151387170, 2948286694377154, 81332961594822202, 1301097749397343978, 48612398553534689114, 904790963165201870170, 26316129785192975106006, 464241023562098660374014, 24858620479726716329900336, 556565016155501619684118816, 20303230470838234228146518916, 424323532462258172880428842252]

cp's OEIS Frontend

A135069 a(n) = [x^(2^n+n-1)] (x + x^2 + x^4 + x^8 + ... + x^(2^n))^n / n for n>=1.

Table of values

List of values