A003500 - cp's OEIS frontend

A003500 a(n) = 4*a(n-1) - a(n-2) with a(0) = 2, a(1) = 4.

n	a(n)
0	2
1	4
2	14
3	52
4	194
5	724
6	2702
7	10084
8	37634
9	140452
10	524174
11	1956244
12	7300802
13	27246964
14	101687054
15	379501252
16	1416317954
17	5285770564
18	19726764302
19	73621286644
20	274758382274
21	1025412242452
22	3826890587534
23	14282150107684
24	53301709843202
25	198924689265124

[2, 4, 14, 52, 194, 724, 2702, 10084, 37634, 140452, 524174, 1956244, 7300802, 27246964, 101687054, 379501252, 1416317954, 5285770564, 19726764302, 73621286644, 274758382274, 1025412242452, 3826890587534, 14282150107684, 53301709843202, 198924689265124]

cp's OEIS Frontend

A003500 a(n) = 4*a(n-1) - a(n-2) with a(0) = 2, a(1) = 4.

Table of values

List of values