A015521 - cp's OEIS frontend

A015521 a(n) = 3a(n-1) + 4a(n-2), a(0) = 0, a(1) = 1.

n	a(n)
0	0
1	1
2	3
3	13
4	51
5	205
6	819
7	3277
8	13107
9	52429
10	209715
11	838861
12	3355443
13	13421773
14	53687091
15	214748365
16	858993459
17	3435973837
18	13743895347
19	54975581389
20	219902325555
21	879609302221
22	3518437208883
23	14073748835533

[0, 1, 3, 13, 51, 205, 819, 3277, 13107, 52429, 209715, 838861, 3355443, 13421773, 53687091, 214748365, 858993459, 3435973837, 13743895347, 54975581389, 219902325555, 879609302221, 3518437208883, 14073748835533]

cp's OEIS Frontend

A015521 a(n) = 3a(n-1) + 4a(n-2), a(0) = 0, a(1) = 1.

Table of values

List of values

cp's OEIS Frontend

A015521 a(n) = 3*a(n-1) + 4*a(n-2), a(0) = 0, a(1) = 1.

Table of values

List of values

A015521 a(n) = 3a(n-1) + 4a(n-2), a(0) = 0, a(1) = 1.