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.
%I A066363 #12 Sep 26 2019 09:05:51 %S A066363 2,4,8,10,16,98,236,244,268,284,292,316,332,638,2198,2282,2338,2422, %T A066363 2674,4653,12274,30753,65018,225267,231478,289605,376995,422684, %U A066363 449756,453092,515175,521925,522825,524325,527025,527925,528225,534075,538275,539025,540975 %N A066363 The floor[n^(3/4)]-perfect numbers, where f-perfect numbers for an arithmetical function f is defined in A066218. %H A066363 Amiram Eldar, <a href="/A066363/b066363.txt">Table of n, a(n) for n = 1..268</a> %H A066363 J. Pe, <a href="http://jlpe.tripod.com/gpn/fperfect.htm">On a Generalization of Perfect Numbers</a>, J. Rec. Math., 31(3) (2002-2003), 168-172. %t A066363 f[x_] := Floor[ x^(3/4)]; Select[ Range[ 2, 10^4], 2 * f[ # ] == Apply[ Plus, Map[ f, Divisors[ # ] ] ] & ] %Y A066363 Cf. A066218. %K A066363 nonn %O A066363 1,1 %A A066363 _Joseph L. Pe_, Dec 20 2001 %E A066363 a(21)-a(41) from _Amiram Eldar_, Sep 26 2019