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A140532 Number of primes with n distinct decimal digits, none of which are 0. 0
4, 20, 83, 395, 1610, 5045, 12850, 23082, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(9) is zero because 1+2+...+9=45 which is divisible by 3, making any number with 9 distinct digits also divisible by 3. - Wei Zhou, Oct 02 2011

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

a(1) = #{2,3,5,7} = 4.

a(2) = #{13,17,19,23,...,97} = 20. Note that the prime 11 is omitted because its decimal digits are not distinct.

MATHEMATICA

Length /@ Table[Select[FromDigits /@ Permutations[Range@9, {i}], PrimeQ], {i, 9}] (* Wei Zhou, Oct 02 2011 *)

CROSSREFS

Cf. A112371.

Sequence in context: A255050 A292540 A055296 * A217482 A099898 A003489

Adjacent sequences:  A140529 A140530 A140531 * A140533 A140534 A140535

KEYWORD

nonn,base,fini,full

AUTHOR

Norman Morton (mathtutorer(AT)yahoo.com), Jul 03 2008

EXTENSIONS

Corrected by Charles R Greathouse IV, Aug 02 2010

STATUS

approved

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Last modified November 23 09:29 EST 2017. Contains 295115 sequences.