A324720 - OEIS

%I #11 Mar 12 2019 22:23:25

%S 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,26,27,28,

%T 29,30,31,32,33,34,36,37,38,40,41,42,43,44,45,46,47,48,50,51,52,53,54,

%U 56,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,78,79,80,82,83,84,86,88,89,90,92,93,94,96,97,98,100

%N Positions of nonnegative terms in A323244; numbers n for which 2*A156552(n) >= A323243(n).

%C These correspond to nonabundant numbers as the terms after the initial 1 are obtained by sorting the sequence A005940(1+A263837(n)) into ascending order.

%H Antti Karttunen, <a href="/A324720/b324720.txt">Table of n, a(n) for n = 1..7679</a> (based on Hans Havermann's factorization of A156552)

%H <a href="/index/Pri#prime_indices">Index entries for sequences computed from indices in prime factorization</a>

%H <a href="/index/Si#SIGMAN">Index entries for sequences related to sigma(n)</a>

%Y Cf. A005940, A156552, A263837, A323243, A323244.

%Y Cf. A324551 (complement), A324201, A324721 (subsequences).

%K nonn

%O 1,2

%A _Antti Karttunen_, Mar 12 2019