A006498 - cp's OEIS frontend

A006498 a(n) = a(n-1) + a(n-3) + a(n-4), a(0) = a(1) = a(2) = 1, a(3) = 2.

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	6
6	9
7	15
8	25
9	40
10	64
11	104
12	169
13	273
14	441
15	714
16	1156
17	1870
18	3025
19	4895
20	7921
21	12816
22	20736
23	33552
24	54289
25	87841
26	142129
27	229970
28	372100
29	602070
30	974169
31	1576239
32	2550409
33	4126648
34	6677056
35	10803704
36	17480761
37	28284465
38	45765225
39	74049690
40	119814916

[1, 1, 1, 2, 4, 6, 9, 15, 25, 40, 64, 104, 169, 273, 441, 714, 1156, 1870, 3025, 4895, 7921, 12816, 20736, 33552, 54289, 87841, 142129, 229970, 372100, 602070, 974169, 1576239, 2550409, 4126648, 6677056, 10803704, 17480761, 28284465, 45765225, 74049690, 119814916]

cp's OEIS Frontend

A006498 a(n) = a(n-1) + a(n-3) + a(n-4), a(0) = a(1) = a(2) = 1, a(3) = 2.

Table of values

List of values