2,1

a(3k+2) = 0. - David Wasserman, Jun 07 2005

Table of n, a(n) for n=2..70.

a(10) = 101, the pair of complementary factors of 10 are (1,10), (2,5) and the prime obtained is 101.

Cf. A087557.

Sequence in context: A274851 A075360 A256756 * A087555 A185682 A217752

Adjacent sequences: A087555 A087556 A087557 * A087559 A087560 A087561

base,nonn

Amarnath Murthy, Sep 13 2003

More terms from David Wasserman, Jun 07 2005

approved