1,6

Table of n, a(n) for n=1..85.

p(16)=53, largest prime substring is 5, so a(16)=5.

See A033274 for the 'no prime substring' sequence.

Sequence in context: A181913 A127584 A124919 * A005600 A180873 A021031

Adjacent sequences: A033917 A033918 A033919 * A033921 A033922 A033923

nonn,base

N. J. A. Sloane.

More terms from Patrick De Geest, Jun 15 1998.

approved