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 A337933 #10 Feb 14 2021 13:16:41 %S A337933 24,30,32,38,40,44,50,52,56,58,62,64,70,957,963,965,969,975,981,985, %T A337933 987,993,999,1001,1005,1011,1015,1017,1023,1025,1029,1033,1035,1041, %U A337933 1045,1047,1049,1053,1057,1059,1065,1071,1077,1083,1085,1089,1095,1101,1105,1107,1113 %N A337933 Numbers that are the sum of two abundant numbers in exactly one way. %C A337933 An easy to calculate upper bound for terms is 12*(A047802(2)+1) = 64696932312. This and all larger numbers can be expressed as the sum of an abundant multiple of 6 and a multiple of A047802(2) in at least two ways. - _Peter Munn_, Feb 09 2021 %e A337933 24 is in the sequence since it is the sum of two abundant numbers in exactly one way as 24 = 12 + 12. %e A337933 30 is in the sequence since it is the sum of two abundant numbers in exactly one way as 30 = 12 + 18. %t A337933 Table[If[Sum[(1 - Sign[Floor[(2 (n - i))/DivisorSigma[1, n - i]]])*(1 - Sign[Floor[(2 i)/DivisorSigma[1, i]]]), {i, Floor[n/2]}] == 1, n, {}], {n, 1200}] // Flatten %Y A337933 Cf. A005101, A047802, A048242. %K A337933 nonn,fini %O A337933 1,1 %A A337933 _Wesley Ivan Hurt_, Oct 01 2020