A192234 - cp's OEIS frontend

A192234 a(n) = 2*(a(n-1) + a(n-2) + a(n-3)) - a(n-4) for n >= 4, with initial terms 0,1,0,1.

n	a(n)
0	0
1	1
2	0
3	1
4	4
5	9
6	28
7	81
8	232
9	673
10	1944
11	5617
12	16236
13	46921
14	135604
15	391905
16	1132624
17	3273345
18	9460144
19	27340321
20	79014996
21	228357577
22	659965644
23	1907336113
24	5512303672
25	15930853281
26	46041020488
27	133061018769
28	384553481404
29	1111380188041

[0, 1, 0, 1, 4, 9, 28, 81, 232, 673, 1944, 5617, 16236, 46921, 135604, 391905, 1132624, 3273345, 9460144, 27340321, 79014996, 228357577, 659965644, 1907336113, 5512303672, 15930853281, 46041020488, 133061018769, 384553481404, 1111380188041]

cp's OEIS Frontend

A192234 a(n) = 2*(a(n-1) + a(n-2) + a(n-3)) - a(n-4) for n >= 4, with initial terms 0,1,0,1.

Table of values

List of values