A080040 - cp's OEIS frontend

A080040 a(n) = 2a(n-1) + 2a(n-2) for n > 1; a(0)=2, a(1)=2.

n	a(n)
0	2
1	2
2	8
3	20
4	56
5	152
6	416
7	1136
8	3104
9	8480
10	23168
11	63296
12	172928
13	472448
14	1290752
15	3526400
16	9634304
17	26321408
18	71911424
19	196465664
20	536754176
21	1466439680
22	4006387712
23	10945654784
24	29904084992
25	81699479552
26	223207129088
27	609813217280
28	1666040692736
29	4551707820032

[2, 2, 8, 20, 56, 152, 416, 1136, 3104, 8480, 23168, 63296, 172928, 472448, 1290752, 3526400, 9634304, 26321408, 71911424, 196465664, 536754176, 1466439680, 4006387712, 10945654784, 29904084992, 81699479552, 223207129088, 609813217280, 1666040692736, 4551707820032]

cp's OEIS Frontend

A080040 a(n) = 2a(n-1) + 2a(n-2) for n > 1; a(0)=2, a(1)=2.

Table of values

List of values

cp's OEIS Frontend

A080040 a(n) = 2*a(n-1) + 2*a(n-2) for n > 1; a(0)=2, a(1)=2.

Table of values

List of values

A080040 a(n) = 2a(n-1) + 2a(n-2) for n > 1; a(0)=2, a(1)=2.