OFFSET
1,1
LINKS
Seiichi Manyama, Rows n = 1..200, flattened
Eric Weisstein's MathWorld, Dirichlet's theorem
EXAMPLE
For differences 1, 2, 3, 4, 5, 6, 7, .. the initial primes are 2; 3; 7, 5; 5, 7; 11, 7, 13, 19; 7, 11; 29, 23, 17, 11, 19, 13; ... etc. Suitable initial values (coprimes to difference) are in A038566. Position of end(start) of rows is given by values of A002088.
From Seiichi Manyama, Apr 02 2018: (Start)
n | phi(n)|
---+-------+------------------------
1 | 1 | 2;
2 | 1 | 3;
3 | 2 | 7, 5;
4 | 2 | 5, 7;
5 | 4 | 11, 7, 13, 19;
6 | 2 | 7, 11;
7 | 6 | 29, 23, 17, 11, 19, 13;
8 | 4 | 17, 11, 13, 23;
9 | 6 | 19, 11, 13, 23, 43, 17;
10 | 4 | 11, 13, 17, 19; (End)
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Labos Elemer, May 07 2001
STATUS
approved