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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.

A377723 Numbers whose number of prime factors (counted with repetition) is greater than or equal to its smallest prime factor.

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%I A377723 #16 Jan 11 2025 04:14:54
%S A377723 4,6,8,10,12,14,16,18,20,22,24,26,27,28,30,32,34,36,38,40,42,44,45,46,
%T A377723 48,50,52,54,56,58,60,62,63,64,66,68,70,72,74,75,76,78,80,81,82,84,86,
%U A377723 88,90,92,94,96,98,99,100,102,104,105,106,108,110,112,114,116
%N A377723 Numbers whose number of prime factors (counted with repetition) is greater than or equal to its smallest prime factor.
%C A377723 Numbers k such that A001222(k) >= A020639(k).
%C A377723 Complement of A091377.
%C A377723 A091371(a(n)) < 1: A001222(a(n)) => A020639(a(n)).
%H A377723 James C. McMahon, <a href="/A377723/b377723.txt">Table of n, a(n) for n = 1..10000</a>
%e A377723 4 is a term because bigomega(4) = spf(4) = 2.
%e A377723 12 is a term because bigomega(12) = 3 > spf(12) = 2.
%e A377723 3 is not a term because bigomega(3) = 1 < spf(3) = 3.
%t A377723 Select[Range[116], PrimeOmega[#]>=FactorInteger[#][[1, 1]]&]
%Y A377723 Cf. A001222, A020639, A091371, A091375, A091376, A091377.
%K A377723 nonn
%O A377723 1,1
%A A377723 _James C. McMahon_, Dec 28 2024