A006190 - cp's OEIS frontend

A006190 a(n) = 3*a(n-1) + a(n-2), with a(0)=0, a(1)=1.

n	a(n)
0	0
1	1
2	3
3	10
4	33
5	109
6	360
7	1189
8	3927
9	12970
10	42837
11	141481
12	467280
13	1543321
14	5097243
15	16835050
16	55602393
17	183642229
18	606529080
19	2003229469
20	6616217487
21	21851881930
22	72171863277
23	238367471761
24	787274278560
25	2600190307441
26	8587845200883
27	28363725910090

[0, 1, 3, 10, 33, 109, 360, 1189, 3927, 12970, 42837, 141481, 467280, 1543321, 5097243, 16835050, 55602393, 183642229, 606529080, 2003229469, 6616217487, 21851881930, 72171863277, 238367471761, 787274278560, 2600190307441, 8587845200883, 28363725910090]

cp's OEIS Frontend

A006190 a(n) = 3*a(n-1) + a(n-2), with a(0)=0, a(1)=1.

Table of values

List of values