A238824 - cp's OEIS frontend

A238824 a(1)=0, a(2)=1; thereafter a(n) = A238823(n-1)-2*a(n-1)-a(n-2).

n	a(n)
1	0
2	1
3	1
4	3
5	7
6	17
7	43
8	105
9	262
10	643
11	1590
12	3911
13	9643
14	23743
15	58502
16	144099
17	355009
18	874545
19	2154505
20	5307663
21	13075683
22	32212375
23	79356454
24	195497421
25	481615082
26	1186475969
27	2922926441
28	7200734309
29	17739268544
30	43701326725
31	107659793177
32	265223778927

[0, 1, 1, 3, 7, 17, 43, 105, 262, 643, 1590, 3911, 9643, 23743, 58502, 144099, 355009, 874545, 2154505, 5307663, 13075683, 32212375, 79356454, 195497421, 481615082, 1186475969, 2922926441, 7200734309, 17739268544, 43701326725, 107659793177, 265223778927]

cp's OEIS Frontend

A238824 a(1)=0, a(2)=1; thereafter a(n) = A238823(n-1)-2*a(n-1)-a(n-2).

Table of values

List of values