A228602 - cp's OEIS frontend

A228602 a(1) = 17, a(2) = 80, a(n) = 4*(a(n-1) + a(n-2)) for n >= 3.

n	a(n)
1	17
2	80
3	388
4	1872
5	9040
6	43648
7	210752
8	1017600
9	4913408
10	23724032
11	114549760
12	553095168
13	2670579712
14	12894699520
15	62261116928
16	300623265792
17	1451537530880
18	7008643186688
19	33840722870272
20	163397464227840
21	788952748392448
22	3809400850481152

[17, 80, 388, 1872, 9040, 43648, 210752, 1017600, 4913408, 23724032, 114549760, 553095168, 2670579712, 12894699520, 62261116928, 300623265792, 1451537530880, 7008643186688, 33840722870272, 163397464227840, 788952748392448, 3809400850481152]

cp's OEIS Frontend

A228602 a(1) = 17, a(2) = 80, a(n) = 4*(a(n-1) + a(n-2)) for n >= 3.

Table of values

List of values