A089067 - cp's OEIS frontend

A089067 a(n) = 2a(n-1) + (-1)^na(floor(n/2)); a(1)=1.

n	a(n)
1	1
2	3
3	5
4	13
5	23
6	51
7	97
8	207
9	401
10	825
11	1627
12	3305
13	6559
14	13215
15	26333
16	52873
17	105539
18	211479
19	422557
20	845939
21	1691053
22	3383733
23	6765839
24	13534983
25	27066661
26	54139881
27	108273203
28	216559621
29	433106027
30	866238387
31	1732450441
32	3464953755
33	6929854637
34	13859814813

[1, 3, 5, 13, 23, 51, 97, 207, 401, 825, 1627, 3305, 6559, 13215, 26333, 52873, 105539, 211479, 422557, 845939, 1691053, 3383733, 6765839, 13534983, 27066661, 54139881, 108273203, 216559621, 433106027, 866238387, 1732450441, 3464953755, 6929854637, 13859814813]

cp's OEIS Frontend

A089067 a(n) = 2a(n-1) + (-1)^na(floor(n/2)); a(1)=1.

Table of values

List of values

cp's OEIS Frontend

A089067 a(n) = 2*a(n-1) + (-1)^n*a(floor(n/2)); a(1)=1.

Table of values

List of values

A089067 a(n) = 2a(n-1) + (-1)^na(floor(n/2)); a(1)=1.