A082840 - cp's OEIS frontend

A082840 a(n) = 4*a(n-1) - a(n-2) + 3, with a(0) = -1, a(1) = 1.

n	a(n)
0	-1
1	1
2	8
3	34
4	131
5	493
6	1844
7	6886
8	25703
9	95929
10	358016
11	1336138
12	4986539
13	18610021
14	69453548
15	259204174
16	967363151
17	3610248433
18	13473630584
19	50284273906
20	187663465043
21	700369586269
22	2613814880036
23	9754889933878
24	36405744855479
25	135868089488041

[-1, 1, 8, 34, 131, 493, 1844, 6886, 25703, 95929, 358016, 1336138, 4986539, 18610021, 69453548, 259204174, 967363151, 3610248433, 13473630584, 50284273906, 187663465043, 700369586269, 2613814880036, 9754889933878, 36405744855479, 135868089488041]

cp's OEIS Frontend

A082840 a(n) = 4*a(n-1) - a(n-2) + 3, with a(0) = -1, a(1) = 1.

Table of values

List of values