A003230 - cp's OEIS frontend

A003230 Expansion of 1/((1-x)(1-2x)(1-x-2x^3)).

n	a(n)
0	1
1	4
2	11
3	28
4	67
5	152
6	335
7	724
8	1539
9	3232
10	6727
11	13900
12	28555
13	58392
14	118959
15	241604
16	489459
17	989520
18	1997015
19	4024508
20	8100699
21	16289032
22	32726655
23	65705268
24	131837763
25	264399936
26	530028199
27	1062139180
28	2127809963

[1, 4, 11, 28, 67, 152, 335, 724, 1539, 3232, 6727, 13900, 28555, 58392, 118959, 241604, 489459, 989520, 1997015, 4024508, 8100699, 16289032, 32726655, 65705268, 131837763, 264399936, 530028199, 1062139180, 2127809963]

cp's OEIS Frontend

A003230 Expansion of 1/((1-x)(1-2x)(1-x-2x^3)).

Table of values

List of values

cp's OEIS Frontend

A003230 Expansion of 1/((1-x)*(1-2*x)*(1-x-2*x^3)).

Table of values

List of values

A003230 Expansion of 1/((1-x)(1-2x)(1-x-2x^3)).