A215125 - cp's OEIS frontend

A215125 E.g.f.: Sum_{n>=0} d^n/dx^n (x + x^2)^(2n) / (2n)!.

n	a(n)
0	1
1	1
2	7
3	33
4	223
5	1753
6	14391
7	137137
8	1382383
9	14981673
10	174494983
11	2135204161
12	27643067007
13	375548195833
14	5326762882903
15	78889684038993
16	1213984929832591
17	19377034523034697
18	320293617185965863
19	5468629894127442913
20	96328047496084810783
21	1747805367475759936281

[1, 1, 7, 33, 223, 1753, 14391, 137137, 1382383, 14981673, 174494983, 2135204161, 27643067007, 375548195833, 5326762882903, 78889684038993, 1213984929832591, 19377034523034697, 320293617185965863, 5468629894127442913, 96328047496084810783, 1747805367475759936281]

cp's OEIS Frontend

A215125 E.g.f.: Sum_{n>=0} d^n/dx^n (x + x^2)^(2n) / (2n)!.

Table of values

List of values

cp's OEIS Frontend

A215125 E.g.f.: Sum_{n>=0} d^n/dx^n (x + x^2)^(2*n) / (2*n)!.

Table of values

List of values

A215125 E.g.f.: Sum_{n>=0} d^n/dx^n (x + x^2)^(2n) / (2n)!.