A049856 - cp's OEIS frontend

A049856 a(n) = (Sum{k=0..n-1} a(k)) - a(n-3), with a(0)=0, a(1)=0, a(2)=1.

n	a(n)
0	0
1	0
2	1
3	1
4	2
5	3
6	6
7	11
8	21
9	39
10	73
11	136
12	254
13	474
14	885
15	1652
16	3084
17	5757
18	10747
19	20062
20	37451
21	69912
22	130509
23	243629
24	454797
25	848997
26	1584874
27	2958580
28	5522960
29	10310043
30	19246380
31	35928380
32	67069677
33	125203017
34	233724034
35	436306771
36	814480202
37	1520439387

[0, 0, 1, 1, 2, 3, 6, 11, 21, 39, 73, 136, 254, 474, 885, 1652, 3084, 5757, 10747, 20062, 37451, 69912, 130509, 243629, 454797, 848997, 1584874, 2958580, 5522960, 10310043, 19246380, 35928380, 67069677, 125203017, 233724034, 436306771, 814480202, 1520439387]

cp's OEIS Frontend

A049856 a(n) = (Sum{k=0..n-1} a(k)) - a(n-3), with a(0)=0, a(1)=0, a(2)=1.

Table of values

List of values