1,1

Table of n, a(n) for n=1..52.

a(1) = 23 because "2" and "3" and "23" are prime substrings of "23".

Sequence in context: A105184 A238056 A066064 * A190731 A092622 A129351

Adjacent sequences: A163756 A163757 A163758 * A163760 A163761 A163762

base,easy,nonn

Gil Broussard, Aug 03 2009

approved