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a(1)=2, a(n+1) is the largest prime < 2+n^smallest digit of a(n).
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%I #6 Mar 31 2012 14:00:55

%S 2,2,5,241,5,3121,7,823541,7,4782961,11,11,13,13,13,13,17,17,19,19,19,

%T 19,23,523,577,9765619,23,727,773,24379,887,27512614091,2,1087,2,1223,

%U 37,50651,2,1511,41,41,43,79493,85159,43,97327,2207,2,2399,2477,2593

%N a(1)=2, a(n+1) is the largest prime < 2+n^smallest digit of a(n).

%e 2, 2 (<(2+1^2)), 5 (<(2+2^2)), 241(<(2+3^5)), 5 (<(2+4^1)).

%Y Cf. A000040, A158061.

%K nonn,base

%O 1,1

%A _Juri-Stepan Gerasimov_, Mar 16 2009

%E Examples corrected to match definition by _D. S. McNeil_, Dec 10 2009

%E Corrected and extended by _D. S. McNeil_, Dec 10 2009