A132459 - cp's OEIS frontend

A132459 Sums of squared coefficients in the negative powers of the Catalan function: a(n) = Sum_{k=1..n+1} [x^(n-k+1)] 1/C(x^2)^k, where C(x) is the g.f. of A000108.

n	a(n)
0	1
1	1
2	2
3	5
4	11
5	18
6	30
7	45
8	101
9	171
10	483
11	702
12	2745
13	3406
14	21215
15	23237
16	202627
17	205701
18	2169260
19	2138431
20	24770064
21	24197219
22	294389605
23	286927242
24	3600713132
25	3508785697
26	45050653316
27	43916201874
28	574363373312

[1, 1, 2, 5, 11, 18, 30, 45, 101, 171, 483, 702, 2745, 3406, 21215, 23237, 202627, 205701, 2169260, 2138431, 24770064, 24197219, 294389605, 286927242, 3600713132, 3508785697, 45050653316, 43916201874, 574363373312]

cp's OEIS Frontend

A132459 Sums of squared coefficients in the negative powers of the Catalan function: a(n) = Sum_{k=1..n+1} [x^(n-k+1)] 1/C(x^2)^k, where C(x) is the g.f. of A000108.

Table of values

List of values