A049864 - cp's OEIS frontend

A049864 a(n) = Sum_{k=0,1,2,...,n-4,n-2,n-1} a(k); a(n-3) is not a summand, with a(0)=a(1)=a(2)=1.

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	8
6	15
7	28
8	52
9	97
10	181
11	338
12	631
13	1178
14	2199
15	4105
16	7663
17	14305
18	26704
19	49850
20	93058
21	173717
22	324288
23	605368
24	1130077
25	2109583
26	3938086
27	7351463
28	13723420
29	25618337
30	47823297
31	89274637
32	166654357
33	311103754
34	580756168
35	1084132616
36	2023815835

[1, 1, 1, 2, 4, 8, 15, 28, 52, 97, 181, 338, 631, 1178, 2199, 4105, 7663, 14305, 26704, 49850, 93058, 173717, 324288, 605368, 1130077, 2109583, 3938086, 7351463, 13723420, 25618337, 47823297, 89274637, 166654357, 311103754, 580756168, 1084132616, 2023815835]

cp's OEIS Frontend

A049864 a(n) = Sum_{k=0,1,2,...,n-4,n-2,n-1} a(k); a(n-3) is not a summand, with a(0)=a(1)=a(2)=1.

Table of values

List of values