A085903 - cp's OEIS frontend

A085903 Expansion of (1 + 2x^2)/((1 + x)(1 - 2x)(1 - 2*x^2)).

n	a(n)
1	1
2	1
3	7
4	9
5	31
6	49
7	127
8	225
9	511
10	961
11	2047
12	3969
13	8191
14	16129
15	32767
16	65025
17	131071
18	261121
19	524287
20	1046529
21	2097151
22	4190209
23	8388607
24	16769025
25	33554431
26	67092481
27	134217727
28	268402689
29	536870911
30	1073676289
31	2147483647

[1, 1, 7, 9, 31, 49, 127, 225, 511, 961, 2047, 3969, 8191, 16129, 32767, 65025, 131071, 261121, 524287, 1046529, 2097151, 4190209, 8388607, 16769025, 33554431, 67092481, 134217727, 268402689, 536870911, 1073676289, 2147483647]

cp's OEIS Frontend

A085903 Expansion of (1 + 2x^2)/((1 + x)(1 - 2x)(1 - 2*x^2)).

Table of values

List of values

cp's OEIS Frontend

A085903 Expansion of (1 + 2*x^2)/((1 + x)*(1 - 2*x)*(1 - 2*x^2)).

Table of values

List of values

A085903 Expansion of (1 + 2x^2)/((1 + x)(1 - 2x)(1 - 2*x^2)).