A374071 - cp's OEIS frontend

A374071 a(n) is the permanent of the Toeplitz matrix of order n whose element (i,j) equals the (i-j)-th composite number if i > j, (j-i)-th prime number if i < j, or 1 if i = j.

n	a(n)
0	1
1	1
2	9
3	107
4	2609
5	98089
6	5564610
7	438180102
8	46399705928
9	6279673881161
10	1060663766284535
11	222840745939132105
12	56798048066468972011
13	17364018690978269373950
14	6261448805827102522607660
15	2624315396531837995006160020
16	1263427401352418949898456181999
17	693487403043958170112254851399169

[1, 1, 9, 107, 2609, 98089, 5564610, 438180102, 46399705928, 6279673881161, 1060663766284535, 222840745939132105, 56798048066468972011, 17364018690978269373950, 6261448805827102522607660, 2624315396531837995006160020, 1263427401352418949898456181999, 693487403043958170112254851399169]

cp's OEIS Frontend

A374071 a(n) is the permanent of the Toeplitz matrix of order n whose element (i,j) equals the (i-j)-th composite number if i > j, (j-i)-th prime number if i < j, or 1 if i = j.

Table of values

List of values