Even numbers that divide the sum of their even divisors.

Terms

a(0) =2a(1) =12a(2) =56a(3) =240a(4) =992a(5) =1344a(6) =16256a(7) =60480a(8) =65520a(9) =1047552a(10) =4357080a(11) =47139840a(12) =67100672a(13) =91065600a(14) =285981696a(15) =919636480a(16) =2758909440a(17) =2952609792a(18) =17179738112a(19) =28364878080a(20) =63996791040a(21) =87722956800a(22) =102002360320a(23) =132867440640a(24) =137438691328