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 A351852 #10 Feb 23 2022 02:33:51 %S A351852 31328,173888,893024,1734488,1896128,4322240,5405624,8485568,8982008, %T A351852 9345248,21874328,38750624,78588224,137663288,139074848,189035000, %U A351852 198387224,270174968,281333528,290873024,315950624,326271968,340513208,357096608,499656608,584527328,693637568 %N A351852 Numbers k such that k and k+1 are both divisible by the number of their divisors over the Gaussian integers. %C A351852 Numbers k such that A062327(k) | k and A062327(k+1) | k+1. %C A351852 All the terms are even numbers of the form k^2 - 1 (A033996). %H A351852 Amiram Eldar, <a href="/A351852/b351852.txt">Table of n, a(n) for n = 1..10000</a> %e A351852 31328 is a term since 31328 is divisible by A062327(31328) = 88 and 31329 is divisible by A062327(31329) = 9. %t A351852 q[n_] := Divisible[n, DivisorSigma[0, n, GaussianIntegers -> True]]; Select[Range[1, 3*10^4, 2]^2 - 1, q[#] && q[# + 1] &] %Y A351852 Subsequence of A033996 and A351851. %Y A351852 Cf. A062327, A114617, A351854. %K A351852 nonn %O A351852 1,1 %A A351852 _Amiram Eldar_, Feb 22 2022