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A229381
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The Simpsons's perfect number, Mersenne prime, and narcissistic number.
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3
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OFFSET
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1,1
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COMMENTS
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The perfect number 8128, Mersenne prime 8191, and narcissistic number 8208 appeared together on the screen in the "Marge and Homer Turn a Couple Play" episode of Season 17 of The Simpsons.
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REFERENCES
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S. Singh, The Simpsons and Their Mathematical Secrets, Bloomsbury USA, 2013.
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LINKS
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Table of n, a(n) for n=1..3.
C. Goff, Animating Popular Mathematics: "The Simpsons and Their Mathematical Secrets", AMS Notices, 62 (2015), 40-44.
Simon Singh, The Simpsons' secret formula: it's written by maths geeks, The Guardian, 21 September 2013.
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FORMULA
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a(1) = A000396(4), a(2) = A000668(5), a(3) = A005188(15).
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CROSSREFS
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Cf. A000396, A000668, A005188.
Sequence in context: A025288 A025306 A151946 * A147633 A237145 A205211
Adjacent sequences: A229378 A229379 A229380 * A229382 A229383 A229384
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KEYWORD
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nonn,fini,full,bref,dumb
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AUTHOR
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Joe Sondow and Jonathan Sondow, Sep 23 2013
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STATUS
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approved
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