A052921 - cp's OEIS frontend

A052921 Expansion of (1 - x)/(1 - 3x + 2x^2 - x^3).

n	a(n)
0	1
1	2
2	4
3	9
4	21
5	49
6	114
7	265
8	616
9	1432
10	3329
11	7739
12	17991
13	41824
14	97229
15	226030
16	525456
17	1221537
18	2839729
19	6601569
20	15346786
21	35676949
22	82938844
23	192809420
24	448227521
25	1042002567
26	2422362079
27	5631308624
28	13091204281
29	30433357674
30	70748973084
31	164471408185

[1, 2, 4, 9, 21, 49, 114, 265, 616, 1432, 3329, 7739, 17991, 41824, 97229, 226030, 525456, 1221537, 2839729, 6601569, 15346786, 35676949, 82938844, 192809420, 448227521, 1042002567, 2422362079, 5631308624, 13091204281, 30433357674, 70748973084, 164471408185]

cp's OEIS Frontend

A052921 Expansion of (1 - x)/(1 - 3x + 2x^2 - x^3).

Table of values

List of values

cp's OEIS Frontend

A052921 Expansion of (1 - x)/(1 - 3*x + 2*x^2 - x^3).

Table of values

List of values

A052921 Expansion of (1 - x)/(1 - 3x + 2x^2 - x^3).