David Callan

David Callan is an actor and standup comedian based in Sydney, Australia. He is a former employee of ASIO; his comedy material is partly based on his experiences as a spy.

In the 2011 sitcom ''At Home with Julia'', he played the recurring role of Agent Smith, one of the Australian Federal Police agents on the Prime Minister's security detail. In 2012, he appeared in two episodes of the TV series ''Rake''. Provided by Wikipedia
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  1. 1
    The number of {1243, 2134}-avoiding permutations

    The number of {1243, 2134}-avoiding permutations by David Callan

    Published 2023-03-01
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  2. 2
    Permutations avoiding 4321 and 3241 have an algebraic generating function

    Permutations avoiding 4321 and 3241 have an algebraic generating function by David Callan

    Published 2022-12-01
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  3. 3
    A determinant of Stirling cycle numbers counts unlabeled acyclic single-source automata

    A determinant of Stirling cycle numbers counts unlabeled acyclic single-source automata by David Callan

    Published 2008-01-01
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  4. 4
    Wilf classification of triples of 4-letter patterns I

    Wilf classification of triples of 4-letter patterns I by David Callan, Toufik Mansour, Mark Shattuck

    Published 2017-03-01
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  5. 5
    Wilf classification of triples of 4-letter patterns II

    Wilf classification of triples of 4-letter patterns II by David Callan, Toufik Mansour, Mark Shattuck

    Published 2017-03-01
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