A332566 - cp's OEIS frontend

A332566 a(n) is the permanent of an n X n symmetric Toeplitz matrix M(n) whose first row consists of a single zero followed by successive positive integers repeated (A004526).

n	a(n)
0	1
1	0
2	1
3	2
4	16
5	150
6	2333
7	45840
8	1227816
9	40715300
10	1701223409
11	84902728550
12	5108474886424
13	357837483830570
14	29336856811970045
15	2745407159100236484
16	294324995624694053072
17	35473014438701226021416
18	4818705384665419284918401
19	727012502373285844943278058
20	122057159014198483893887865744

[1, 0, 1, 2, 16, 150, 2333, 45840, 1227816, 40715300, 1701223409, 84902728550, 5108474886424, 357837483830570, 29336856811970045, 2745407159100236484, 294324995624694053072, 35473014438701226021416, 4818705384665419284918401, 727012502373285844943278058, 122057159014198483893887865744]

cp's OEIS Frontend

A332566 a(n) is the permanent of an n X n symmetric Toeplitz matrix M(n) whose first row consists of a single zero followed by successive positive integers repeated (A004526).

Table of values

List of values