A323988 - cp's OEIS frontend

A323988 a(n) = 2^(n - 1) + binomial(n, floor(n/2))*(n + 1)/2.

n	a(n)
0	1
1	2
2	5
3	10
4	23
5	46
6	102
7	204
8	443
9	886
10	1898
11	3796
12	8054
13	16108
14	33932
15	67864
16	142163
17	284326
18	592962
19	1185924
20	2464226
21	4928452
22	10209620
23	20419240
24	42190558
25	84381116
26	173962532
27	347925064
28	715908428
29	1431816856
30	2941192472
31	5882384944
32	12065310083
33	24130620166

[1, 2, 5, 10, 23, 46, 102, 204, 443, 886, 1898, 3796, 8054, 16108, 33932, 67864, 142163, 284326, 592962, 1185924, 2464226, 4928452, 10209620, 20419240, 42190558, 84381116, 173962532, 347925064, 715908428, 1431816856, 2941192472, 5882384944, 12065310083, 24130620166]

cp's OEIS Frontend

A323988 a(n) = 2^(n - 1) + binomial(n, floor(n/2))*(n + 1)/2.

Table of values

List of values