A003480 - cp's OEIS frontend

A003480 a(0) = 1, a(1) = 2, for n > 1, a(n) = 4a(n-1) - 2a(n-2).

n	a(n)
0	1
1	2
2	7
3	24
4	82
5	280
6	956
7	3264
8	11144
9	38048
10	129904
11	443520
12	1514272
13	5170048
14	17651648
15	60266496
16	205762688
17	702517760
18	2398545664
19	8189147136
20	27959497216
21	95459694592
22	325919783936
23	1112759746560
24	3799199418368
25	12971278180352
26	44286713884672
27	151204299177984

[1, 2, 7, 24, 82, 280, 956, 3264, 11144, 38048, 129904, 443520, 1514272, 5170048, 17651648, 60266496, 205762688, 702517760, 2398545664, 8189147136, 27959497216, 95459694592, 325919783936, 1112759746560, 3799199418368, 12971278180352, 44286713884672, 151204299177984]

cp's OEIS Frontend

A003480 a(0) = 1, a(1) = 2, for n > 1, a(n) = 4a(n-1) - 2a(n-2).

Table of values

List of values

cp's OEIS Frontend

A003480 a(0) = 1, a(1) = 2, for n > 1, a(n) = 4*a(n-1) - 2*a(n-2).

Table of values

List of values

A003480 a(0) = 1, a(1) = 2, for n > 1, a(n) = 4a(n-1) - 2a(n-2).