OFFSET
1,1
EXAMPLE
The triangle starts as
2;
3, 3;
1, 5, 5;
3, 1, 7, 7;
3, 5, 2, 1, 11;
1, 1, 4, 3, 13, 13;
1, 5, 8, 7, 3, 2, 17;
3, 1, 1, 9, 5, 4, 19, 19;
3, 5, 5, 3, 9, 8, 2, 1, 23;
1, 5, 2, 9, 1, 14, 8, 7, 4, 3;
PROG
(Magma) IsSemiprime:=func< n | &+[ k[2]: k in Factorization(n) ] eq 2 >; splt:=38; T:=[ n: n in [2..splt] | IsSemiprime(n) ]; &cat[ [ NthPrime(n) mod T[k]: k in [1..n] ]: n in [1..#T] ]; // Klaus Brockhaus, Dec 02 2010
CROSSREFS
KEYWORD
AUTHOR
Juri-Stepan Gerasimov, Dec 02 2010
STATUS
approved