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 A143930 #21 Oct 16 2023 18:01:10 %S A143930 3630,5946,5958,6990,9858,10878,15114,18006,18018,34398,61362,90894, %T A143930 90906,93894,93906,124974,153018,178560,457920,1188000,3529440, %U A143930 9776160,26028000,69107040,187267680,478980000,1268710560,4065625440,10164078720,25833761280 %N A143930 Aliquot sequence starting at 3630. %H A143930 T. D. Noe, <a href="/A143930/b143930.txt">Table of n, a(n) for n = 0..2624</a> [complete sequence from Varona data file "SQ3630-to-1"] %H A143930 Manuel Benito, Wolfgang Creyaufmüller, Juan L. Varona, and Paul Zimmermann, <a href="https://projecteuclid.org/euclid.em/1062621215">Aliquot Sequence 3630 Ends After Reaching 100 Digits</a>, Experimental Mathematics, Vol. 11, No. 2, 2002, pp. 201-206. %H A143930 Juan L. Varona, <a href="http://www.unirioja.es/cu/jvarona/aliquot.html">Aliquot Sequences</a> %F A143930 a(n+1) = A001065(a(n)). - _R. J. Mathar_, Oct 11 2017 %t A143930 NestList[DivisorSigma[1,#]-#&,3630,50] (* _Paolo Xausa_, Oct 16 2023 *) %Y A143930 Cf. A001065. %K A143930 nonn,fini,full,look %O A143930 0,1 %A A143930 _N. J. A. Sloane_, Nov 30 2008