a(n) is the smallest number representable in exactly n ways as a sum of 2 powerful(1) numbers.

Terms

a(0) =2a(1) =17a(2) =108a(3) =153a(4) =297a(5) =657a(6) =1764a(7) =2052a(8) =4644a(9) =6156a(10) =10800a(11) =16200a(12) =22932a(13) =29000a(14) =11025a(15) =54225a(16) =92025a(17) =68796a(18) =100548a(19) =99225a(20) =44100a(21) =88200a(22) =264600a(23) =431244a(24) =176400a(25) =441000a(26) =666468a(27) =1151172a(28) =352800a(29) =617400