A110947 - cp's OEIS frontend

A110947 a(n) = permanent of an n X n matrix M of zeros and ones defined as follows: if we concatenate the rows of M to form a vector v of length n^2, v_i = 1 only if i = 1 or a multiple of 2.

n	a(n)
1	1
2	1
3	1
4	0
5	4
6	0
7	36
8	0
9	576
10	0
11	14400
12	0
13	518400
14	0
15	25401600
16	0
17	1625702400
18	0
19	131681894400
20	0
21	13168189440000
22	0
23	1593350922240000
24	0
25	229442532802560000
26	0
27	38775788043632640000
28	0
29	7600054456551997440000
30	0

[1, 1, 1, 0, 4, 0, 36, 0, 576, 0, 14400, 0, 518400, 0, 25401600, 0, 1625702400, 0, 131681894400, 0, 13168189440000, 0, 1593350922240000, 0, 229442532802560000, 0, 38775788043632640000, 0, 7600054456551997440000, 0]

cp's OEIS Frontend

A110947 a(n) = permanent of an n X n matrix M of zeros and ones defined as follows: if we concatenate the rows of M to form a vector v of length n^2, v_i = 1 only if i = 1 or a multiple of 2.

Table of values

List of values