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Search: id:A140532
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| A140532 |
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a(n) = number of n-digit pandigital primes. |
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+0
1
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OFFSET
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1,1
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REFERENCES
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Clifford A. Pickover, Wonders of Numbers.
Schaum's Outlines, Combinatorics, see inclusion/exclusion principle
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EXAMPLE
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a(1) = 4 because pandigital primes are 2,3, 5 and 7. Four numbers in all.
a(2) = 20 (13 +17 +19 +23 +29 +31 +37 +41 + .... ) Twenty pandigital primes
Note that prime 11 is omitted because it is not pandigital
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CROSSREFS
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Cf. A112371-A112373
Sequence in context: A082138 A074358 A055296 this_sequence A099898 A003489 A167682
Adjacent sequences: A140529 A140530 A140531 this_sequence A140533 A140534 A140535
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KEYWORD
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nonn
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AUTHOR
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Norman Morton (mathtutorer(AT)yahoo.com), Jul 03 2008
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