A337354 - cp's OEIS frontend

A337354 a(n) is the numerator of Product_{i=0..n-1} (n-i)^((-1)^ceiling(i/2)).

n	a(n)
1	1
2	2
3	3
4	2
5	5
6	9
7	7
8	40
9	45
10	7
11	308
12	48
13	975
14	539
15	88
16	1664
17	1105
18	24255
19	13376
20	56576
21	41769
22	48279
23	55936
24	226304
25	348075
26	370139
27	671232
28	870400
29	2082925
30	4283037
31	13872128
32	80773120
33	343682625
34	4023459
35	1553678336
36	1900544
37	14411758075
38	59457783
39	1471905792
40	1406402560

[1, 2, 3, 2, 5, 9, 7, 40, 45, 7, 308, 48, 975, 539, 88, 1664, 1105, 24255, 13376, 56576, 41769, 48279, 55936, 226304, 348075, 370139, 671232, 870400, 2082925, 4283037, 13872128, 80773120, 343682625, 4023459, 1553678336, 1900544, 14411758075, 59457783, 1471905792, 1406402560]

cp's OEIS Frontend

A337354 a(n) is the numerator of Product_{i=0..n-1} (n-i)^((-1)^ceiling(i/2)).

Table of values

List of values