OFFSET
1,1
COMMENTS
These numbers are used in a simple proof of the infinitude of the primes: n!*i + 1 and n!*j + 1 are coprime for 1 <= i < j <= n, so for any n we get n coprime integers (greater than 1) and hence we get at least n distinct primes.
EXAMPLE
Triangle T(n,k) begins:
n\k 1 2 3 4 5 6 ...
1 2
2 3 5
3 7 13 19
4 25 49 73 97
5 121 241 361 481 601
6 721 1441 2161 2881 3601 4321
...
CROSSREFS
KEYWORD
tabl,nonn
AUTHOR
Joe B. Stephen, May 03 2023
STATUS
approved