A111569 - cp's OEIS frontend

A111569 a(n) = a(n-1) + a(n-3) + a(n-4) for n > 3, a(0) = -1, a(1) = 1, a(2) = 2, a(3) = 1.

n	a(n)
0	-1
1	1
2	2
3	1
4	1
5	4
6	7
7	9
8	14
9	25
10	41
11	64
12	103
13	169
14	274
15	441
16	713
17	1156
18	1871
19	3025
20	4894
21	7921
22	12817
23	20736
24	33551
25	54289
26	87842
27	142129
28	229969
29	372100
30	602071
31	974169
32	1576238
33	2550409
34	4126649
35	6677056
36	10803703
37	17480761
38	28284466
39	45765225

[-1, 1, 2, 1, 1, 4, 7, 9, 14, 25, 41, 64, 103, 169, 274, 441, 713, 1156, 1871, 3025, 4894, 7921, 12817, 20736, 33551, 54289, 87842, 142129, 229969, 372100, 602071, 974169, 1576238, 2550409, 4126649, 6677056, 10803703, 17480761, 28284466, 45765225]

cp's OEIS Frontend

A111569 a(n) = a(n-1) + a(n-3) + a(n-4) for n > 3, a(0) = -1, a(1) = 1, a(2) = 2, a(3) = 1.

Table of values

List of values