1,1

For n=1023456789 there is no possible a(n), so the sequence is finite. - Eric Angelini, Dec 18 2006

a(123456788) is the last term. - Andrew Weimholt, Dec 19 2006

a(123456788) = 9099900999090090. - Sasha Semenov, Dec 25 2006

R. Zumkeller, Table of n, a(n) for n = 1..10000

Hans Havermann, Graph of first 2600 terms

Sasha Semenov, Notes on computing this sequence [From rec.math]

Cf. A030238.

Sequence in context: A137805 A163501 A306229 * A243500 A026262 A026234

Adjacent sequences: A096776 A096777 A096778 * A096780 A096781 A096782

nonn,base,fini,look

Reinhard Zumkeller, Aug 16 2004

approved