A155020 - cp's OEIS frontend

A155020 a(n) = 2a(n-1) + 2a(n-2) for n > 2, a(0)=1, a(1)=1, a(2)=3.

n	a(n)
0	1
1	1
2	3
3	8
4	22
5	60
6	164
7	448
8	1224
9	3344
10	9136
11	24960
12	68192
13	186304
14	508992
15	1390592
16	3799168
17	10379520
18	28357376
19	77473792
20	211662336
21	578272256
22	1579869184
23	4316282880
24	11792304128
25	32217174016
26	88018956288
27	240472260608
28	656982433792
29	1794909388800
30	4903783645184
31	13397386067968

[1, 1, 3, 8, 22, 60, 164, 448, 1224, 3344, 9136, 24960, 68192, 186304, 508992, 1390592, 3799168, 10379520, 28357376, 77473792, 211662336, 578272256, 1579869184, 4316282880, 11792304128, 32217174016, 88018956288, 240472260608, 656982433792, 1794909388800, 4903783645184, 13397386067968]

cp's OEIS Frontend

A155020 a(n) = 2a(n-1) + 2a(n-2) for n > 2, a(0)=1, a(1)=1, a(2)=3.

Table of values

List of values

cp's OEIS Frontend

A155020 a(n) = 2*a(n-1) + 2*a(n-2) for n > 2, a(0)=1, a(1)=1, a(2)=3.

Table of values

List of values

A155020 a(n) = 2a(n-1) + 2a(n-2) for n > 2, a(0)=1, a(1)=1, a(2)=3.