A123891 - cp's OEIS frontend

A123891 Expansion of (1-3x^2+x^3)/(1-3x+x^3).

n	a(n)
0	1
1	3
2	6
3	18
4	51
5	147
6	423
7	1218
8	3507
9	10098
10	29076
11	83721
12	241065
13	694119
14	1998636
15	5754843
16	16570410
17	47712594
18	137382939
19	395578407
20	1139022627
21	3279684942
22	9443476419
23	27191406630
24	78294534948
25	225440128425
26	649128978645
27	1869092400987
28	5381837074536

[1, 3, 6, 18, 51, 147, 423, 1218, 3507, 10098, 29076, 83721, 241065, 694119, 1998636, 5754843, 16570410, 47712594, 137382939, 395578407, 1139022627, 3279684942, 9443476419, 27191406630, 78294534948, 225440128425, 649128978645, 1869092400987, 5381837074536]

cp's OEIS Frontend

A123891 Expansion of (1-3x^2+x^3)/(1-3x+x^3).

Table of values

List of values

cp's OEIS Frontend

A123891 Expansion of (1-3*x^2+x^3)/(1-3*x+x^3).

Table of values

List of values

A123891 Expansion of (1-3x^2+x^3)/(1-3x+x^3).