Composite numbers k such that the sum of their aliquot parts divides k+1.

Terms

a(0) =21a(1) =115a(2) =329a(3) =731a(4) =2133a(5) =2171a(6) =6821a(7) =7379a(8) =8357a(9) =13987a(10) =19521a(11) =24331a(12) =24881a(13) =29491a(14) =46001a(15) =50579a(16) =56789a(17) =79421a(18) =103729a(19) =117409a(20) =125159a(21) =137881a(22) =174109a(23) =176661a(24) =226859a(25) =235721a(26) =257291a(27) =357769a(28) =492071a(29) =499091