A072130 - cp's OEIS frontend

A072130 a(n+1) - 3a(n) + a(n-1) = (2/3)(1+w^(n+1)+w^(2*n+2)); a(1) = 0, a(2) = 1; where w is the cubic root of unity.

n	a(n)
1	0
2	1
3	5
4	14
5	37
6	99
7	260
8	681
9	1785
10	4674
11	12237
12	32039
13	83880
14	219601
15	574925
16	1505174
17	3940597
18	10316619
19	27009260
20	70711161
21	185124225
22	484661514
23	1268860317
24	3321919439
25	8696898000
26	22768774561
27	59609425685
28	156059502494

[0, 1, 5, 14, 37, 99, 260, 681, 1785, 4674, 12237, 32039, 83880, 219601, 574925, 1505174, 3940597, 10316619, 27009260, 70711161, 185124225, 484661514, 1268860317, 3321919439, 8696898000, 22768774561, 59609425685, 156059502494]

cp's OEIS Frontend

A072130 a(n+1) - 3a(n) + a(n-1) = (2/3)(1+w^(n+1)+w^(2*n+2)); a(1) = 0, a(2) = 1; where w is the cubic root of unity.

Table of values

List of values

cp's OEIS Frontend

A072130 a(n+1) - 3*a(n) + a(n-1) = (2/3)*(1+w^(n+1)+w^(2*n+2)); a(1) = 0, a(2) = 1; where w is the cubic root of unity.

Table of values

List of values

A072130 a(n+1) - 3a(n) + a(n-1) = (2/3)(1+w^(n+1)+w^(2*n+2)); a(1) = 0, a(2) = 1; where w is the cubic root of unity.