A180668 - cp's OEIS frontend

A180668 a(n) = a(n-1)+a(n-2)+a(n-3)+4*n-8 with a(0)=0, a(1)=0 and a(2)=1.

n	a(n)
0	0
1	0
2	1
3	5
4	14
5	32
6	67
7	133
8	256
9	484
10	905
11	1681
12	3110
13	5740
14	10579
15	19481
16	35856
17	65976
18	121377
19	223277
20	410702
21	755432
22	1389491
23	2555709
24	4700720
25	8646012
26	15902537
27	29249369
28	53798022
29	98950036
30	181997539
31	334745713

[0, 0, 1, 5, 14, 32, 67, 133, 256, 484, 905, 1681, 3110, 5740, 10579, 19481, 35856, 65976, 121377, 223277, 410702, 755432, 1389491, 2555709, 4700720, 8646012, 15902537, 29249369, 53798022, 98950036, 181997539, 334745713]

cp's OEIS Frontend

A180668 a(n) = a(n-1)+a(n-2)+a(n-3)+4*n-8 with a(0)=0, a(1)=0 and a(2)=1.

Table of values

List of values