A384677 - cp's OEIS frontend

A384677 Expansion of (1-x-2x^2) / (1-2x-4x^2+2x^3).

n	a(n)
0	1
1	1
2	4
3	10
4	34
5	100
6	316
7	964
8	2992
9	9208
10	28456
11	87760
12	270928
13	835984
14	2580160
15	7962400
16	24573472
17	75836224
18	234041536
19	722281024
20	2229055744
21	6879152512
22	21229965952
23	65518430464
24	202198419712
25	624010629376
26	1925778076672
27	5943201831424
28	18341494710784

[1, 1, 4, 10, 34, 100, 316, 964, 2992, 9208, 28456, 87760, 270928, 835984, 2580160, 7962400, 24573472, 75836224, 234041536, 722281024, 2229055744, 6879152512, 21229965952, 65518430464, 202198419712, 624010629376, 1925778076672, 5943201831424, 18341494710784]

cp's OEIS Frontend

A384677 Expansion of (1-x-2x^2) / (1-2x-4x^2+2x^3).

Table of values

List of values

cp's OEIS Frontend

A384677 Expansion of (1-x-2*x^2) / (1-2*x-4*x^2+2*x^3).

Table of values

List of values

A384677 Expansion of (1-x-2x^2) / (1-2x-4x^2+2x^3).