A130844 - cp's OEIS frontend

A130844 a(n) = 2*a(n-1) + a(n-2) - a(n-3) + a(n-4), with a(1) = 0, a(2) = 3, a(3) = 5 and a(4) = 17.

n	a(n)
1	0
2	3
3	5
4	17
5	36
6	87
7	198
8	464
9	1075
10	2503
11	5815
12	13522
13	31431
14	73072
15	169868
16	394899
17	918025
18	2134153
19	4961300
20	11533627
21	26812426
22	62331332
23	144902763
24	336858059
25	783099975
26	1820486578
27	4232117835
28	9838480332
29	22871691896
30	53170232867

[0, 3, 5, 17, 36, 87, 198, 464, 1075, 2503, 5815, 13522, 31431, 73072, 169868, 394899, 918025, 2134153, 4961300, 11533627, 26812426, 62331332, 144902763, 336858059, 783099975, 1820486578, 4232117835, 9838480332, 22871691896, 53170232867]

cp's OEIS Frontend

A130844 a(n) = 2*a(n-1) + a(n-2) - a(n-3) + a(n-4), with a(1) = 0, a(2) = 3, a(3) = 5 and a(4) = 17.

Table of values

List of values