A352044 - cp's OEIS frontend

A352044 a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/2)} binomial(n-1,2k) a(k).

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	8
6	16
7	33
8	71
9	159
10	367
11	864
12	2058
13	4934
14	11870
15	28608
16	69020
17	166652
18	402748
19	974464
20	2361416
21	5733656
22	13954488
23	34054016
24	83351472
25	204659440
26	504162416
27	1246065920
28	3089752480
29	7685498976
30	19174255584
31	47971104769
32	120326714335

[1, 1, 1, 2, 4, 8, 16, 33, 71, 159, 367, 864, 2058, 4934, 11870, 28608, 69020, 166652, 402748, 974464, 2361416, 5733656, 13954488, 34054016, 83351472, 204659440, 504162416, 1246065920, 3089752480, 7685498976, 19174255584, 47971104769, 120326714335]

cp's OEIS Frontend

A352044 a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/2)} binomial(n-1,2k) a(k).

Table of values

List of values

cp's OEIS Frontend

A352044 a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/2)} binomial(n-1,2*k) * a(k).

Table of values

List of values

A352044 a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/2)} binomial(n-1,2k) a(k).