A227430 - cp's OEIS frontend

A227430 Expansion of x^2(1-x)^3/((1-2x)(1-x+x^2)(1-3*x+3x^2)).

n	a(n)
0	0
1	0
2	1
3	3
4	6
5	10
6	15
7	21
8	29
9	45
10	90
11	220
12	561
13	1365
14	3095
15	6555
16	13110
17	25126
18	46971
19	87381
20	164921
21	320001
22	640002
23	1309528
24	2707629
25	5592405
26	11450531
27	23166783
28	46333566
29	91869970
30	181348455
31	357913941
32	708653429
33	1410132405
34	2820264810
35	5662052980

[0, 0, 1, 3, 6, 10, 15, 21, 29, 45, 90, 220, 561, 1365, 3095, 6555, 13110, 25126, 46971, 87381, 164921, 320001, 640002, 1309528, 2707629, 5592405, 11450531, 23166783, 46333566, 91869970, 181348455, 357913941, 708653429, 1410132405, 2820264810, 5662052980]

cp's OEIS Frontend

A227430 Expansion of x^2(1-x)^3/((1-2x)(1-x+x^2)(1-3*x+3x^2)).

Table of values

List of values

cp's OEIS Frontend

A227430 Expansion of x^2*(1-x)^3/((1-2*x)*(1-x+x^2)*(1-3*x+3x^2)).

Table of values

List of values

A227430 Expansion of x^2(1-x)^3/((1-2x)(1-x+x^2)(1-3*x+3x^2)).