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A158577
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a(n) = size of the n-th term in S(10) (defined in Comments).
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1
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4, 21, 143, 1061, 8363, 68900, 1, 1, 1, 1, 1, 1, 586044, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| 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.
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CROSSREFS
| A158576-A158579, A145667-A145674
Sequence in context: A087761 A120368 A053482 * A006879 A163861 A006153
Adjacent sequences: A158574 A158575 A158576 * A158578 A158579 A158580
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KEYWORD
| base,hard,more,nonn
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AUTHOR
| W. Edwin Clark (eclark(AT)math.usf.edu), Mar 21 2009
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