A030186 - cp's OEIS frontend

A030186 a(n) = 3*a(n-1) + a(n-2) - a(n-3) for n >= 3, a(0)=1, a(1)=2, a(2)=7.

n	a(n)
0	1
1	2
2	7
3	22
4	71
5	228
6	733
7	2356
8	7573
9	24342
10	78243
11	251498
12	808395
13	2598440
14	8352217
15	26846696
16	86293865
17	277376074
18	891575391
19	2865808382
20	9211624463
21	29609106380
22	95173135221
23	305916887580
24	983314691581
25	3160687827102
26	10159461285307
27	32655756991442

[1, 2, 7, 22, 71, 228, 733, 2356, 7573, 24342, 78243, 251498, 808395, 2598440, 8352217, 26846696, 86293865, 277376074, 891575391, 2865808382, 9211624463, 29609106380, 95173135221, 305916887580, 983314691581, 3160687827102, 10159461285307, 32655756991442]

cp's OEIS Frontend

A030186 a(n) = 3*a(n-1) + a(n-2) - a(n-3) for n >= 3, a(0)=1, a(1)=2, a(2)=7.

Table of values

List of values