Least number beginning with n such that every partial sum is a square.

Terms

a(0) =1a(1) =24a(2) =39a(3) =420a(4) =540a(5) =657a(6) =720a(7) =848a(8) =976a(9) =10175a(10) =11200a(11) =1296a(12) =1328a(13) =14212a(14) =15164a(15) =16384a(16) =17220a(17) =1821a(18) =19200a(19) =2019a(20) =21180a(21) =2217a(22) =23160a(23) =2415a(24) =25140a(25) =2613a(26) =27120a(27) =2811a(28) =29100a(29) =3009