A372414 - cp's OEIS frontend

A372414 Coefficient of x^n in the expansion of ( (1-x+x^3) / (1-x)^2 )^n.

n	a(n)
0	1
1	1
2	3
3	13
4	55
5	231
6	981
7	4215
8	18271
9	79735
10	349843
11	1541783
12	6820045
13	30263689
14	134658681
15	600578373
16	2684116863
17	12017803439
18	53895617379
19	242054324055
20	1088530440315
21	4900978877115
22	22089865194543
23	99662269990363
24	450049706481181
25	2033999993960581

[1, 1, 3, 13, 55, 231, 981, 4215, 18271, 79735, 349843, 1541783, 6820045, 30263689, 134658681, 600578373, 2684116863, 12017803439, 53895617379, 242054324055, 1088530440315, 4900978877115, 22089865194543, 99662269990363, 450049706481181, 2033999993960581]

cp's OEIS Frontend

A372414 Coefficient of x^n in the expansion of ( (1-x+x^3) / (1-x)^2 )^n.

Table of values

List of values