A352408 - cp's OEIS frontend

A352408 a(n) = [x^(n+1)] (1+x - x^2C(x^3))^(n(2n+1)) / (n(2n+1)), for n >= 1, where C(x) = 1 + xC(x)^2 is the Catalan function (A000108).

n	a(n)
1	0
2	3
3	105
4	4521
5	247509
6	16743276
7	1358620365
8	129050741220
9	14072813590533
10	1734613925513373
11	238643675398832787
12	36267490290699148842
13	6035968171216586764461
14	1092097033048311239037276
15	213473299061006718358241931
16	44838030511923231603476358240

[0, 3, 105, 4521, 247509, 16743276, 1358620365, 129050741220, 14072813590533, 1734613925513373, 238643675398832787, 36267490290699148842, 6035968171216586764461, 1092097033048311239037276, 213473299061006718358241931, 44838030511923231603476358240]

cp's OEIS Frontend

A352408 a(n) = [x^(n+1)] (1+x - x^2C(x^3))^(n(2n+1)) / (n(2n+1)), for n >= 1, where C(x) = 1 + xC(x)^2 is the Catalan function (A000108).

Table of values

List of values

cp's OEIS Frontend

A352408 a(n) = [x^(n+1)] (1+x - x^2*C(x^3))^(n*(2*n+1)) / (n*(2*n+1)), for n >= 1, where C(x) = 1 + x*C(x)^2 is the Catalan function (A000108).

Table of values

List of values

A352408 a(n) = [x^(n+1)] (1+x - x^2C(x^3))^(n(2n+1)) / (n(2n+1)), for n >= 1, where C(x) = 1 + xC(x)^2 is the Catalan function (A000108).