Numbers k that divide 2^k + 4.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =20a(5) =260a(6) =740a(7) =2132a(8) =2180a(9) =5252a(10) =43364a(11) =49268a(12) =49737a(13) =80660a(14) =130052a(15) =293620a(16) =542852a(17) =661412a(18) =717027a(19) =865460a(20) =1564180a(21) =2185220a(22) =2192132a(23) =2816372a(24) =3784916a(25) =4377620a(26) =4427540a(27) =5722004a(28) =6307652a(29) =6919460