A215448 - cp's OEIS frontend

A215448 a(0)=1, a(1)=0, a(n) = a(n-1) + a(n-2) + Sum_{i=0...n-1} a(i).

n	a(n)
0	1
1	0
2	2
3	5
4	15
5	43
6	124
7	357
8	1028
9	2960
10	8523
11	24541
12	70663
13	203466
14	585857
15	1686908
16	4857258
17	13985917
18	40270843
19	115955271
20	333879896
21	961368845
22	2768151264
23	7970573896
24	22950352843
25	66082907265
26	190278147899
27	547884090854
28	1577569365297
29	4542429947992

[1, 0, 2, 5, 15, 43, 124, 357, 1028, 2960, 8523, 24541, 70663, 203466, 585857, 1686908, 4857258, 13985917, 40270843, 115955271, 333879896, 961368845, 2768151264, 7970573896, 22950352843, 66082907265, 190278147899, 547884090854, 1577569365297, 4542429947992]

cp's OEIS Frontend

A215448 a(0)=1, a(1)=0, a(n) = a(n-1) + a(n-2) + Sum_{i=0...n-1} a(i).

Table of values

List of values