A375234 - cp's OEIS frontend

A375234 Square array T(n,k), n>1 and k>1, read by antidiagonals in ascending order, giving the smallest n*k-digit number that, if arranged in an n X k matrix, forms a k-digit emirp (A006567) in each row and an n-digit emirp in each column, or -1 if no such number exists.

n	a(n)
2	1331
3	131337
4	113337
5	13139731
6	113113337
7	11933371
8	1313717979
9	113149971311
10	119314713911
11	1119737379
12	131313131397
13	113107709179991
14	1193100990013911
15	111971414339313
16	111119333337

[1331, 131337, 113337, 13139731, 113113337, 11933371, 1313717979, 113149971311, 119314713911, 1119737379, 131313131397, 113107709179991, 1193100990013911, 111971414339313, 111119333337]

cp's OEIS Frontend

A375234 Square array T(n,k), n>1 and k>1, read by antidiagonals in ascending order, giving the smallest n*k-digit number that, if arranged in an n X k matrix, forms a k-digit emirp (A006567) in each row and an n-digit emirp in each column, or -1 if no such number exists.

Table of values

List of values