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A158579 a(n) = largest member of the n-th term in S(10) (defined in Comments). 4


%S 7,97,997,9973,99991,999983,9999991,294001,505447,584141,604171,

%T 929573,971767,99999989,1062599,1282529,1524181,2017963,2474431,

%U 2690201,3070663,3085553,3326489,4393139,5152507,5285767,5564453,5575259

%N a(n) = largest member of the n-th term in S(10) (defined in Comments).

%C Let H(L,b) be the Hamming graph whose vertices are the sequences of length L over the alphabet {0,1,...,b-1} with adjacency being defined by having Hamming distance 1. Let P(L,b) be the subgraph of H(L,b) induced by the set of vertices which are base b representations of primes with L digits (not allowing leading 0 digits). Let S(b) be the sequence of all components of the graphs P(L,b), L>0, sorted by the smallest prime in a component.

%Y A158576-A158579, A145667-A145674

%K base,hard,nonn

%O 1,1

%A _W. Edwin Clark_, Mar 21 2009

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Last modified April 10 07:44 EDT 2021. Contains 342843 sequences. (Running on oeis4.)