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A096241
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Number of n-digit base-8 deletable primes.
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0
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4, 14, 50, 238, 1123, 5792, 30598, 166056, 927639, 5308458, 30984757
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| A prime p is a base-b deletable prime if when written in base b it has the property that removing some digit leaves either the empty string or another deletable prime. "Digit" means digit in base b.
Deleting a digit cannot leave any leading zeros in the new string. For example, deleting the 2 in 2003 to obtain 003 is not allowed.
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CROSSREFS
| Cf. A080608, A080603, A096235-A096246.
Sequence in context: A062807 A117421 A034743 * A149488 A058692 A165813
Adjacent sequences: A096238 A096239 A096240 * A096242 A096243 A096244
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KEYWORD
| nonn,base,more
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AUTHOR
| Michael Kleber (michael.kleber(AT)gmail.com), Feb 28 2003
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EXTENSIONS
| 5 more terms from Ryan Propper (rpropper(AT)stanford.edu), Jul 19 2005
a(11) from D. S. McNeil (mcneil(AT)hku.hk), Dec 08 2009
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