|
%I #25 Sep 08 2022 08:46:08
%S 1,2,3,9,21,33,81,261,897,1334,1364,2974,4364,14282,26937,46593,64665,
%T 74918,79833,92685,145215,147454,161001,162602,166934,289454,347738,
%U 383594,422073,430137,440013,443402,445874,621027,649154,655005,1174305,1187361,1670955
%N Numbers n such that floor(antisigma(n) / sigma(n)) = floor(antisigma(n+1) / sigma(n+1)).
%C Also numbers n such that floor((n*(n+1)/2) / sigma(n)) = floor(((n+1)*(n+2)/2) / sigma(n+1)).
%C Numbers n such that A244327(n) = A244327(n+1).
%C Numbers n such that A244329(n) = A244329(n+1).
%H Jaroslav Krizek, <a href="/A244666/b244666.txt">Table of n, a(n) for n = 1..39</a>
%o (Magma) [n: n in [1..10^6] | Floor((n*(n+1)div 2) div (SumOfDivisors(n))) eq Floor(((n+1)*(n+2)div 2) div (SumOfDivisors(n+1)))]
%Y Cf. A000203, A000217, A024816, A046022, A244327, A244328, A244329.
%K nonn
%O 1,2
%A _Jaroslav Krizek_, Jul 08 2014
|
