A050168 - cp's OEIS frontend

A050168 a(0) = 1; for n > 0, a(n) = binomial(n, floor(n/2)) + binomial(n-1, floor(n/2)).

n	a(n)
0	1
1	2
2	3
3	5
4	9
5	16
6	30
7	55
8	105
9	196
10	378
11	714
12	1386
13	2640
14	5148
15	9867
16	19305
17	37180
18	72930
19	140998
20	277134
21	537472
22	1058148
23	2057510
24	4056234
25	7904456
26	15600900
27	30458900
28	60174900
29	117675360
30	232676280
31	455657715
32	901620585
33	1767883500

[1, 2, 3, 5, 9, 16, 30, 55, 105, 196, 378, 714, 1386, 2640, 5148, 9867, 19305, 37180, 72930, 140998, 277134, 537472, 1058148, 2057510, 4056234, 7904456, 15600900, 30458900, 60174900, 117675360, 232676280, 455657715, 901620585, 1767883500]

cp's OEIS Frontend

A050168 a(0) = 1; for n > 0, a(n) = binomial(n, floor(n/2)) + binomial(n-1, floor(n/2)).

Table of values

List of values