Least k for which the integers floor(2k/(m*(m+1))) for m=1,2,...,n are distinct.

Terms

a(0) =1a(1) =1a(2) =3a(3) =6a(4) =12a(5) =20a(6) =45a(7) =63a(8) =84a(9) =144a(10) =180a(11) =225a(12) =330a(13) =396a(14) =468a(15) =637a(16) =735a(17) =840a(18) =1088a(19) =1224a(20) =1377a(21) =1710a(22) =1900a(23) =2310a(24) =2541a(25) =2783a(26) =3312a(27) =3600a(28) =3900a(29) =4563