A300057 - cp's OEIS frontend

A300057 Coefficient of z^(3n) in the expansion of (1 + 9z + 9z^2 + z^3)^(2n).

n	a(n)
0	1
1	164
2	47148
3	15454820
4	5361965980
5	1919987703504
6	701459496193236
7	259867456921970040
8	97260263038893462300
9	36686877800581349096240
10	13924013746979490475444528
11	5311128944356277793155688612
12	2034235241375650519750351973188

[1, 164, 47148, 15454820, 5361965980, 1919987703504, 701459496193236, 259867456921970040, 97260263038893462300, 36686877800581349096240, 13924013746979490475444528, 5311128944356277793155688612, 2034235241375650519750351973188]

cp's OEIS Frontend

A300057 Coefficient of z^(3n) in the expansion of (1 + 9z + 9z^2 + z^3)^(2n).

Table of values

List of values

cp's OEIS Frontend

A300057 Coefficient of z^(3*n) in the expansion of (1 + 9*z + 9*z^2 + z^3)^(2*n).

Table of values

List of values

A300057 Coefficient of z^(3n) in the expansion of (1 + 9z + 9z^2 + z^3)^(2n).