A145073 - cp's OEIS frontend

A145073 Coefficient of x^(3^n) in Q(x)^(n+1), where Q(x) = Sum_{k>=0} (x^(3^k) + x^(2*3^k)).

n	a(n)
0	1
1	2
2	7
3	44
4	325
5	3110
6	34258
7	436304
8	6246439
9	99637730
10	1747851787
11	33469239848
12	694321125511
13	15513919320368
14	371408549270425
15	9484764686963792
16	257355204923817028
17	7393783957451330630
18	224224270472995407877

[1, 2, 7, 44, 325, 3110, 34258, 436304, 6246439, 99637730, 1747851787, 33469239848, 694321125511, 15513919320368, 371408549270425, 9484764686963792, 257355204923817028, 7393783957451330630, 224224270472995407877]

cp's OEIS Frontend

A145073 Coefficient of x^(3^n) in Q(x)^(n+1), where Q(x) = Sum_{k>=0} (x^(3^k) + x^(2*3^k)).

Table of values

List of values