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%I #26 Jun 22 2022 21:03:28
%S 8128,8191,8208
%N The Simpsons's perfect number, Mersenne prime, and narcissistic number.
%C 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.
%D S. Singh, The Simpsons and Their Mathematical Secrets, Bloomsbury Publishing, London, 2013, pp. 93-96, ISBN 9781408835302 / 9781408843734.
%H C. Goff, <a href="https://www.ams.org/notices/201501/rnoti-p40.pdf">Animating Popular Mathematics: "The Simpsons and Their Mathematical Secrets"</a>, AMS Notices, Vol. 62, No. 1 (2015), 40-44.
%H Simon Singh, <a href="https://www.theguardian.com/tv-and-radio/2013/sep/22/the-simpsons-secret-formula-maths-simon-singh">The Simpsons' secret formula: it's written by maths geeks</a>, The Guardian, 21 September 2013.
%F a(1) = A000396(4), a(2) = A000668(5), a(3) = A005188(15).
%Y Cf. A000396, A000668, A005188.
%K nonn,fini,full,bref,dumb
%O 1,1
%A Joe Sondow and _Jonathan Sondow_, Sep 23 2013
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