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 A334418 #11 Apr 30 2020 03:25:37 %S A334418 12,20,30,42,114,138,678,1758,8296,10052,12966,13076,14862,19635, %T A334418 38950,50802,77118,94108,218334,439134,478194,746202,1128174,2028198, %U A334418 6934398,7750146,8330924,10030804,33467106,36205482,60716562,65183838,69334698,81757564,84010614 %N A334418 Primitive abundant numbers (A091191) with a record gap to the next primitive abundant number. %C A334418 The record gap values are 6, 10, 12, 14, 24, 36, 70, 84, ... (see the link for more values). %H A334418 Amiram Eldar, <a href="/A334418/b334418.txt">Table of n, a(n) for n = 1..42</a> %H A334418 Amiram Eldar, <a href="/A334418/a334418.txt">Table of n, a(n), gap(n) for n = 1..42</a> %e A334418 The first 6 terms of A091191 are 12, 18, 20, 30, 42 and 56. The differences between these terms are 6, 2, 10, 12 and 14. The record gaps are 6, 10, 12 and 14, which occur after the terms 12, 20, 30 and 42. %t A334418 primAbQ[n_] := DivisorSigma[1, n] > 2 n && AllTrue[Most @ Rest @ Divisors[n], DivisorSigma[1, #] <= 2*# &]; seq = {}; m = 12; dm = 0; Do[If[primAbQ[n], d = n - m; If[d > dm, dm = d; AppendTo[seq, m]]; m = n], {n, 13, 10^6}]; seq %Y A334418 Cf. A091191, A283418, A334419. %Y A334418 Similar sequences: A306747, A306748, A306953. %K A334418 nonn %O A334418 1,1 %A A334418 _Amiram Eldar_, Apr 29 2020