A114696 - cp's OEIS frontend

A114696 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	15
3	40
4	97
5	238
6	575
7	1392
8	3361
9	8118
10	19599
11	47320
12	114241
13	275806
14	665855
15	1607520
16	3880897
17	9369318
18	22619535
19	54608392
20	131836321
21	318281038
22	768398399
23	1855077840
24	4478554081
25	10812186006
26	26102926095
27	63018038200
28	152139002497
29	367296043198

[1, 6, 15, 40, 97, 238, 575, 1392, 3361, 8118, 19599, 47320, 114241, 275806, 665855, 1607520, 3880897, 9369318, 22619535, 54608392, 131836321, 318281038, 768398399, 1855077840, 4478554081, 10812186006, 26102926095, 63018038200, 152139002497, 367296043198]

cp's OEIS Frontend

A114696 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

A114696 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

A114696 Expansion of (1+4x+x^2)/((1-x^2)(1-2*x-x^2)); a Pellian-related sequence.