A059973 - cp's OEIS frontend

A059973 Expansion of x(1 + x - 2x^2) / ( 1 - 4*x^2 - x^4).

n	a(n)
0	0
1	1
2	1
3	2
4	4
5	9
6	17
7	38
8	72
9	161
10	305
11	682
12	1292
13	2889
14	5473
15	12238
16	23184
17	51841
18	98209
19	219602
20	416020
21	930249
22	1762289
23	3940598
24	7465176
25	16692641
26	31622993
27	70711162
28	133957148
29	299537289
30	567451585
31	1268860318
32	2403763488
33	5374978561

[0, 1, 1, 2, 4, 9, 17, 38, 72, 161, 305, 682, 1292, 2889, 5473, 12238, 23184, 51841, 98209, 219602, 416020, 930249, 1762289, 3940598, 7465176, 16692641, 31622993, 70711162, 133957148, 299537289, 567451585, 1268860318, 2403763488, 5374978561]

cp's OEIS Frontend

A059973 Expansion of x(1 + x - 2x^2) / ( 1 - 4*x^2 - x^4).

Table of values

List of values

cp's OEIS Frontend

A059973 Expansion of x*(1 + x - 2*x^2) / ( 1 - 4*x^2 - x^4).

Table of values

List of values

A059973 Expansion of x(1 + x - 2x^2) / ( 1 - 4*x^2 - x^4).