%I #2 Mar 30 2012 19:00:24

%S 1,2,5,126,252047377,1017210679182495207444253709079169646680658

%N a(1) = 1, for n >= 2: a(n) = a(n-1)^(n-1) + 1.

%C The next term is too large to include.

%e For n = 4: a(4) = 5^3 + 1 = 126.

%K nonn

%O 1,2

%A _Jaroslav Krizek_, Nov 03 2010