Unitary s-Zumkeller numbers.

Terms

a(0) =60a(1) =140a(2) =420a(3) =660a(4) =1224a(5) =1820a(6) =2660a(7) =2820a(8) =4620a(9) =5460a(10) =7140a(11) =7980a(12) =8580a(13) =9660a(14) =11220a(15) =12180a(16) =12540a(17) =13020a(18) =13260a(19) =13580a(20) =13860a(21) =14140a(22) =14420a(23) =14820a(24) =15180a(25) =15540a(26) =16380a(27) =17220a(28) =17940a(29) =18060