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 A178458 #18 Jan 14 2022 06:33:45 %S A178458 2210,3250,24650,94250,117650,199810,214370,310250,351650,485810, %T A178458 499850,700570,727610,744770,915850,986050,1306450,1545050,1814410, %U A178458 1841450,1885130,2582450,2699450,3052010,3583450,4028050,4678570,5094050,5257850,6466850,7059650,7144930 %N A178458 Abundant numbers of the form k^2 + 1. %H A178458 Amiram Eldar, <a href="/A178458/b178458.txt">Table of n, a(n) for n = 1..10000</a> %e A178458 2210 = 2*5*13*17, sigma(2210) = 4536 > 2*2210 and 47^2 + 1 = 2210. %t A178458 Select[Range[3000]^2 + 1, DivisorSigma[1, #] > 2# &] %Y A178458 Cf. A000203, A002522, A005101. %K A178458 nonn %O A178458 1,1 %A A178458 _John L. Drost_, Dec 22 2010