A038508 - cp's OEIS frontend

A038508 Expansion of (1-2x-x^2)/((1-2x)(1-2x+2*x^2)).

n	a(n)
0	1
1	2
2	5
3	12
4	30
5	76
6	196
7	512
8	1352
9	3600
10	9648
11	25984
12	70240
13	190400
14	517184
15	1406976
16	3831936
17	10445056
18	28488448
19	77735936
20	212186624
21	579320832
22	1581966336
23	4320477184
24	11800692736
25	32233951232

[1, 2, 5, 12, 30, 76, 196, 512, 1352, 3600, 9648, 25984, 70240, 190400, 517184, 1406976, 3831936, 10445056, 28488448, 77735936, 212186624, 579320832, 1581966336, 4320477184, 11800692736, 32233951232]

cp's OEIS Frontend

A038508 Expansion of (1-2x-x^2)/((1-2x)(1-2x+2*x^2)).

Table of values

List of values

cp's OEIS Frontend

A038508 Expansion of (1-2*x-x^2)/((1-2*x)*(1-2*x+2*x^2)).

Table of values

List of values

A038508 Expansion of (1-2x-x^2)/((1-2x)(1-2x+2*x^2)).