Numbers k such that k and k+1 are both half-Zumkeller numbers (A246198).

Terms

a(0) =224a(1) =440a(2) =1224a(3) =2024a(4) =3968a(5) =5624a(6) =11024a(7) =18224a(8) =35720a(9) =38024a(10) =50624a(11) =53360a(12) =65024a(13) =74528a(14) =81224a(15) =140624a(16) =148224a(17) =159200a(18) =164024a(19) =184040a(20) =189224a(21) =194480a(22) =207024a(23) =216224a(24) =233288a(25) =245024a(26) =314720a(27) =354024a(28) =370880a(29) =378224