A209448 - cp's OEIS frontend

A209448 a(n) = Pell(n)A008655(n) for n>=1, with a(0)=1, where A008655 lists the coefficients in (theta_3(x)theta_3(3x)+theta_2(x)theta_2(3*x))^4.

n	a(n)
0	1
1	24
2	432
3	4440
4	21024
5	87696
6	559440
7	1395264
8	5728320
9	23852760
10	64719648
11	183528288
12	898460640
13	1765134672
14	6002425728
15	21820957200
16	52895150208
17	134056553904
18	598084104240
19	1090757945760
20	3530801969856
21	11795485116480
22	26821191064896
23	65724336729792

[1, 24, 432, 4440, 21024, 87696, 559440, 1395264, 5728320, 23852760, 64719648, 183528288, 898460640, 1765134672, 6002425728, 21820957200, 52895150208, 134056553904, 598084104240, 1090757945760, 3530801969856, 11795485116480, 26821191064896, 65724336729792]

cp's OEIS Frontend

A209448 a(n) = Pell(n)A008655(n) for n>=1, with a(0)=1, where A008655 lists the coefficients in (theta_3(x)theta_3(3x)+theta_2(x)theta_2(3*x))^4.

Table of values

List of values

cp's OEIS Frontend

A209448 a(n) = Pell(n)*A008655(n) for n>=1, with a(0)=1, where A008655 lists the coefficients in (theta_3(x)*theta_3(3*x)+theta_2(x)*theta_2(3*x))^4.

Table of values

List of values

A209448 a(n) = Pell(n)A008655(n) for n>=1, with a(0)=1, where A008655 lists the coefficients in (theta_3(x)theta_3(3x)+theta_2(x)theta_2(3*x))^4.