A028894 - cp's OEIS frontend

A028894 a(n) = either 4a(n-1)+1 or 4a(n-1)+3 depending on corresponding term of A005614, +1 for 0, +3 for 1.

n	a(n)
1	1
2	5
3	23
4	95
5	381
6	1527
7	6109
8	24439
9	97759
10	391037
11	1564151
12	6256607
13	25026429
14	100105719
15	400422877
16	1601691511
17	6406766047
18	25627064189
19	102508256759
20	410033027037
21	1640132108151
22	6560528432607
23	26242113730429

[1, 5, 23, 95, 381, 1527, 6109, 24439, 97759, 391037, 1564151, 6256607, 25026429, 100105719, 400422877, 1601691511, 6406766047, 25627064189, 102508256759, 410033027037, 1640132108151, 6560528432607, 26242113730429]

cp's OEIS Frontend

A028894 a(n) = either 4a(n-1)+1 or 4a(n-1)+3 depending on corresponding term of A005614, +1 for 0, +3 for 1.

Table of values

List of values