cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A074316 Abundant Fibonacci numbers.

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%I A074316 #19 Sep 03 2019 03:04:24
%S A074316 144,2584,46368,832040,14930352,102334155,267914296,4807526976,
%T A074316 86267571272,1548008755920,498454011879264,23416728348467685,
%U A074316 160500643816367088,2880067194370816120,51680708854858323072
%N A074316 Abundant Fibonacci numbers.
%H A074316 Amiram Eldar, <a href="/A074316/b074316.txt">Table of n, a(n) for n = 1..150</a>
%e A074316 a(1)=144 because the sum of the aliquot divisors of 144 (which is a Fibonacci number) is 1+2+3+4+6+8+9+12+16+18+24+36+48+72=259, which is more than 144, hence 144 is abundant. 144 is the first abundant Fibonacci number.
%t A074316 Select[Fibonacci[Range[100]],DivisorSigma[1,#]>2#&] (* _Harvey P. Dale_, Jul 27 2011 *)
%Y A074316 Intersection of A000045 and A005101.
%K A074316 nonn
%O A074316 1,1
%A A074316 _Shyam Sunder Gupta_, Sep 22 2002