A343177 - cp's OEIS frontend

A343177 a(0)=4; if n > 0 is even then a(n) = 2^(n/2+1)+3, otherwise a(n) = 3*(2^((n-1)/2)+1).

n	a(n)
0	4
1	6
2	7
3	9
4	11
5	15
6	19
7	27
8	35
9	51
10	67
11	99
12	131
13	195
14	259
15	387
16	515
17	771
18	1027
19	1539
20	2051
21	3075
22	4099
23	6147
24	8195
25	12291
26	16387
27	24579
28	32771
29	49155
30	65539
31	98307
32	131075
33	196611
34	262147
35	393219
36	524291
37	786435
38	1048579
39	1572867
40	2097155
41	3145731
42	4194307
43	6291459

[4, 6, 7, 9, 11, 15, 19, 27, 35, 51, 67, 99, 131, 195, 259, 387, 515, 771, 1027, 1539, 2051, 3075, 4099, 6147, 8195, 12291, 16387, 24579, 32771, 49155, 65539, 98307, 131075, 196611, 262147, 393219, 524291, 786435, 1048579, 1572867, 2097155, 3145731, 4194307, 6291459]

cp's OEIS Frontend

A343177 a(0)=4; if n > 0 is even then a(n) = 2^(n/2+1)+3, otherwise a(n) = 3*(2^((n-1)/2)+1).

Table of values

List of values