A082841 - cp's OEIS frontend

A082841 a(n) = 4*a(n-1) - a(n-2) for n>1, a(0)=3, a(1)=9.

n	a(n)
0	3
1	9
2	33
3	123
4	459
5	1713
6	6393
7	23859
8	89043
9	332313
10	1240209
11	4628523
12	17273883
13	64467009
14	240594153
15	897909603
16	3351044259
17	12506267433
18	46674025473
19	174189834459
20	650085312363
21	2426151414993
22	9054520347609
23	33791929975443

[3, 9, 33, 123, 459, 1713, 6393, 23859, 89043, 332313, 1240209, 4628523, 17273883, 64467009, 240594153, 897909603, 3351044259, 12506267433, 46674025473, 174189834459, 650085312363, 2426151414993, 9054520347609, 33791929975443]

cp's OEIS Frontend

A082841 a(n) = 4*a(n-1) - a(n-2) for n>1, a(0)=3, a(1)=9.

Table of values

List of values