A082988 - cp's OEIS frontend

A082988 a(n) = Sum_{k=0..n} 4^k*F(k) where F(k) is the k-th Fibonacci number.

n	a(n)
0	0
1	4
2	20
3	148
4	916
5	6036
6	38804
7	251796
8	1628052
9	10540948
10	68212628
11	441505684
12	2857424788
13	18493790100
14	119693957012
15	774676469652
16	5013809190804
17	32450060277652
18	210021188163476
19	1359285717096340
20	8797481879000980

[0, 4, 20, 148, 916, 6036, 38804, 251796, 1628052, 10540948, 68212628, 441505684, 2857424788, 18493790100, 119693957012, 774676469652, 5013809190804, 32450060277652, 210021188163476, 1359285717096340, 8797481879000980]

cp's OEIS Frontend

A082988 a(n) = Sum_{k=0..n} 4^k*F(k) where F(k) is the k-th Fibonacci number.

Table of values

List of values