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A158577 a(n) = size of the n-th term in S(10) (defined in Comments). 1
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; text; internal format)
OFFSET

1,1

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.

LINKS

Table of n, a(n) for n=1..50.

CROSSREFS

Cf. A006879, A158576, A158578, A158579 (base 10).

Cf. A145667, A145668, A145669, A145670 (base 2).

Cf. A145671, A145672, A145673, A145674 (base 3).

Sequence in context: A245503 A120368 A053482 * A006879 A228063 A228111

Adjacent sequences:  A158574 A158575 A158576 * A158578 A158579 A158580

KEYWORD

base,hard,more,nonn

AUTHOR

W. Edwin Clark, Mar 21 2009

STATUS

approved

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Last modified April 22 22:19 EDT 2021. Contains 343197 sequences. (Running on oeis4.)