A052939 - cp's OEIS frontend

A052939 Expansion of (1-x)(1+x)/(1-3x-x^2+2*x^3).

n	a(n)
0	1
1	3
2	9
3	28
4	87
5	271
6	844
7	2629
8	8189
9	25508
10	79455
11	247495
12	770924
13	2401357
14	7480005
15	23299524
16	72575863
17	226067103
18	704178124
19	2193449749
20	6832393165
21	21282272996
22	66292312655
23	206494424631
24	643211040556
25	2003542920989

[1, 3, 9, 28, 87, 271, 844, 2629, 8189, 25508, 79455, 247495, 770924, 2401357, 7480005, 23299524, 72575863, 226067103, 704178124, 2193449749, 6832393165, 21282272996, 66292312655, 206494424631, 643211040556, 2003542920989]

cp's OEIS Frontend

A052939 Expansion of (1-x)(1+x)/(1-3x-x^2+2*x^3).

Table of values

List of values

cp's OEIS Frontend

A052939 Expansion of (1-x)*(1+x)/(1-3*x-x^2+2*x^3).

Table of values

List of values

A052939 Expansion of (1-x)(1+x)/(1-3x-x^2+2*x^3).