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 A145470 #8 Jul 17 2019 07:51:44 %S A145470 12,30,42,45,56,66,112,220,261,282,294,297,308,342,364,390,416,477, %T A145470 492,513,516,532,536,555,567,572,580,620,621,632,651,700,705,768,777, %U A145470 786,795,812,832,836,860,880,884,891,897,906,957,975,976,981,992,1000,1005 %N A145470 A positive integer k is included if d(k) = d(k+1) + d(k+2), where d(k) is the number of divisors of k. %H A145470 Amiram Eldar, <a href="/A145470/b145470.txt">Table of n, a(n) for n = 1..10000</a> %t A145470 Transpose[Select[Partition[Range[1010], 3, 1], DivisorSigma[0, First[#]] == DivisorSigma[0, Last[#]] + DivisorSigma[0, #[[2]]]&]][[1]] (* _Amiram Eldar_, Jul 17 2019 after _Harvey P. Dale_ at A175116 *) %Y A145470 Cf. A000005, A145469, A175116. %K A145470 nonn %O A145470 1,1 %A A145470 _Leroy Quet_, Oct 11 2008 %E A145470 Extended by _Ray Chandler_, Oct 27 2008