103678domain: NAppears in sequencesNumbers k such that sigma(k) = sigma(k+5).at n=25A015865[ exp(17/18)*n! ].at n=7A030878(5*F(n)+3*L(n)-8)/2.at n=21A206417Inverse binomial transform of -2 followed by A000032(n+1).at n=24A244213