A322939 - cp's OEIS frontend

A322939 a(n) = [x^n] (4x^2 + x - 1)/(4x^3 + 3x^2 + 2x - 1).

n	a(n)
0	1
1	1
2	1
3	9
4	25
5	81
6	273
7	889
8	2921
9	9601
10	31521
11	103529
12	340025
13	1116721
14	3667633
15	12045529
16	39560841
17	129928801
18	426722241
19	1401474249
20	4602830425
21	15116972561
22	49648333393
23	163058906169
24	535530702761
25	1758831457601
26	5776490648161
27	18971598480169
28	62307994735225

[1, 1, 1, 9, 25, 81, 273, 889, 2921, 9601, 31521, 103529, 340025, 1116721, 3667633, 12045529, 39560841, 129928801, 426722241, 1401474249, 4602830425, 15116972561, 49648333393, 163058906169, 535530702761, 1758831457601, 5776490648161, 18971598480169, 62307994735225]

cp's OEIS Frontend

A322939 a(n) = [x^n] (4x^2 + x - 1)/(4x^3 + 3x^2 + 2x - 1).

Table of values

List of values

cp's OEIS Frontend

A322939 a(n) = [x^n] (4*x^2 + x - 1)/(4*x^3 + 3*x^2 + 2*x - 1).

Table of values

List of values

A322939 a(n) = [x^n] (4x^2 + x - 1)/(4x^3 + 3x^2 + 2x - 1).