A114689 - cp's OEIS frontend

A114689 Expansion of (1 +4x -x^2)/((1-x^2)(1-2*x-x^2)); a Pellian-related sequence.

n	a(n)
0	1
1	6
2	13
3	36
4	85
5	210
6	505
7	1224
8	2953
9	7134
10	17221
11	41580
12	100381
13	242346
14	585073
15	1412496
16	3410065
17	8232630
18	19875325
19	47983284
20	115841893
21	279667074
22	675176041
23	1630019160
24	3935214361
25	9500447886
26	22936110133
27	55372668156
28	133681446445
29	322735561050

[1, 6, 13, 36, 85, 210, 505, 1224, 2953, 7134, 17221, 41580, 100381, 242346, 585073, 1412496, 3410065, 8232630, 19875325, 47983284, 115841893, 279667074, 675176041, 1630019160, 3935214361, 9500447886, 22936110133, 55372668156, 133681446445, 322735561050]

cp's OEIS Frontend

A114689 Expansion of (1 +4x -x^2)/((1-x^2)(1-2*x-x^2)); a Pellian-related sequence.

Table of values

List of values

cp's OEIS Frontend

A114689 Expansion of (1 +4*x -x^2)/((1-x^2)*(1-2*x-x^2)); a Pellian-related sequence.

Table of values

List of values

A114689 Expansion of (1 +4x -x^2)/((1-x^2)(1-2*x-x^2)); a Pellian-related sequence.