A122558 - cp's OEIS frontend

A122558 a(0)=1, a(1)=3, a(n) = 4a(n-1) + 3a(n-2) for n > 1.

n	a(n)
0	1
1	3
2	15
3	69
4	321
5	1491
6	6927
7	32181
8	149505
9	694563
10	3226767
11	14990757
12	69643329
13	323545587
14	1503112335
15	6983086101
16	32441681409
17	150715983939
18	700188979983
19	3252903871749
20	15112182426945
21	70207441323027
22	326166312572943

[1, 3, 15, 69, 321, 1491, 6927, 32181, 149505, 694563, 3226767, 14990757, 69643329, 323545587, 1503112335, 6983086101, 32441681409, 150715983939, 700188979983, 3252903871749, 15112182426945, 70207441323027, 326166312572943]

cp's OEIS Frontend

A122558 a(0)=1, a(1)=3, a(n) = 4a(n-1) + 3a(n-2) for n > 1.

Table of values

List of values

cp's OEIS Frontend

A122558 a(0)=1, a(1)=3, a(n) = 4*a(n-1) + 3*a(n-2) for n > 1.

Table of values

List of values

A122558 a(0)=1, a(1)=3, a(n) = 4a(n-1) + 3a(n-2) for n > 1.