A135351 - cp's OEIS frontend

A135351 a(n) = (2^n + 3 - 7(-1)^n + 30^n)/6; or a(0) = 0 and for n > 0, a(n) = A005578(n-1) - (-1)^n.

n	a(n)
0	0
1	2
2	0
3	3
4	2
5	7
6	10
7	23
8	42
9	87
10	170
11	343
12	682
13	1367
14	2730
15	5463
16	10922
17	21847
18	43690
19	87383
20	174762
21	349527
22	699050
23	1398103
24	2796202
25	5592407
26	11184810
27	22369623
28	44739242
29	89478487
30	178956970
31	357913943
32	715827882
33	1431655767
34	2863311530
35	5726623063
36	11453246122
37	22906492247
38	45812984490

[0, 2, 0, 3, 2, 7, 10, 23, 42, 87, 170, 343, 682, 1367, 2730, 5463, 10922, 21847, 43690, 87383, 174762, 349527, 699050, 1398103, 2796202, 5592407, 11184810, 22369623, 44739242, 89478487, 178956970, 357913943, 715827882, 1431655767, 2863311530, 5726623063, 11453246122, 22906492247, 45812984490]

cp's OEIS Frontend

A135351 a(n) = (2^n + 3 - 7(-1)^n + 30^n)/6; or a(0) = 0 and for n > 0, a(n) = A005578(n-1) - (-1)^n.

Table of values

List of values

cp's OEIS Frontend

A135351 a(n) = (2^n + 3 - 7*(-1)^n + 3*0^n)/6; or a(0) = 0 and for n > 0, a(n) = A005578(n-1) - (-1)^n.

Table of values

List of values

A135351 a(n) = (2^n + 3 - 7(-1)^n + 30^n)/6; or a(0) = 0 and for n > 0, a(n) = A005578(n-1) - (-1)^n.