A144720 - cp's OEIS frontend

A144720 a(0) = 2, a(1) = 3, a(n) = 4 * a(n-1) - a(n-2).

n	a(n)
0	2
1	3
2	10
3	37
4	138
5	515
6	1922
7	7173
8	26770
9	99907
10	372858
11	1391525
12	5193242
13	19381443
14	72332530
15	269948677
16	1007462178
17	3759900035
18	14032137962
19	52368651813
20	195442469290
21	729401225347
22	2722162432098
23	10159248503045

[2, 3, 10, 37, 138, 515, 1922, 7173, 26770, 99907, 372858, 1391525, 5193242, 19381443, 72332530, 269948677, 1007462178, 3759900035, 14032137962, 52368651813, 195442469290, 729401225347, 2722162432098, 10159248503045]

cp's OEIS Frontend

A144720 a(0) = 2, a(1) = 3, a(n) = 4 * a(n-1) - a(n-2).

Table of values

List of values