A372256 - cp's OEIS frontend

A372256 a(n) = (n-1)!/2^floor((n-1)/2) + floor((n-1)/2).

n	a(n)
1	1
2	1
3	2
4	4
5	8
6	32
7	93
8	633
9	2524
10	22684
11	113405
12	1247405
13	7484406
14	97297206
15	681080407
16	10216206007
17	81729648008
18	1389404016008
19	12504636144009
20	237588086736009
21	2375880867360010
22	49893498214560010
23	548828480360160011
24	12623055048283680011
25	151476660579404160012

[1, 1, 2, 4, 8, 32, 93, 633, 2524, 22684, 113405, 1247405, 7484406, 97297206, 681080407, 10216206007, 81729648008, 1389404016008, 12504636144009, 237588086736009, 2375880867360010, 49893498214560010, 548828480360160011, 12623055048283680011, 151476660579404160012]

cp's OEIS Frontend

A372256 a(n) = (n-1)!/2^floor((n-1)/2) + floor((n-1)/2).

Table of values

List of values