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 A353540 #10 Apr 26 2022 04:45:25 %S A353540 8110374,9154143,39637323,54957174,78219294,98759814,111713874, %T A353540 113603874,118703583,141708174,142339923,147934323,165767874, %U A353540 169846983,173894874,198219174,222002934,234435354,250429023,266664123,269371374,270969543,302704674,312610023,315474003 %N A353540 Starts of runs of 4 consecutive numbers whose abundancy index is larger than Pi^2/6. %H A353540 Amiram Eldar, <a href="/A353540/b353540.txt">Table of n, a(n) for n = 1..835</a> (terms below 10^10) %e A353540 8110374 is a term since sigma(8110374)/8110374 = 2.048..., sigma(8110375)/8110375 = 1.654..., sigma(8110376)/8110376 = 1.906... and sigma(8110377)/8110377 = 1.717... are all larger than Pi^2/6 = 1.644... . %Y A353540 Cf. A000203, A013661. %Y A353540 Subsequence of A353537, A353538 and A353539. %Y A353540 A353541 is a subsequence. %K A353540 nonn %O A353540 1,1 %A A353540 _Amiram Eldar_, Apr 25 2022