|
|
A176066
|
|
Triangle read by rows: R(n,k)=semiprime(n+1) mod (semiprime(k)+1), 1<=k<=n.
|
|
2
|
|
|
1, 4, 2, 0, 3, 0, 4, 0, 4, 3, 0, 1, 5, 4, 0, 1, 0, 1, 10, 6, 5, 2, 1, 2, 0, 7, 6, 0, 0, 4, 5, 3, 10, 9, 3, 2, 1, 5, 6, 4, 11, 10, 4, 3, 0, 3, 5, 3, 0, 3, 1, 11, 10, 7, 6, 4, 6, 4, 1, 4, 2, 12, 11, 8, 7, 0, 0, 0, 5, 2, 5, 3, 13, 12, 9, 8, 1, 0, 3, 3, 8, 5, 8, 6, 16, 15, 12, 11, 4, 3, 2
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
LINKS
|
|
|
FORMULA
|
|
|
EXAMPLE
|
1;
4,2;
0,3,0;
4,0,4,3;
0,1,5,4,0;
|
|
MAPLE
|
|
|
PROG
|
(PARI) trg(nn) = {semip = select(n->bigomega(n) == 2, vector(nn, i, i)); for (n = 1, #semip-1, for (k = 1, n, print1(semip[n+1] % (semip[k] + 1), ", "); ); ); } \\ Michel Marcus, Sep 11 2013
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|