Difference between the cubes and 2*tetrahedral numbers; A000578(n) - 2*A000292(n).

Terms

a(0) =0a(1) =-1a(2) =0a(3) =7a(4) =24a(5) =55a(6) =104a(7) =175a(8) =272a(9) =399a(10) =560a(11) =759a(12) =1000a(13) =1287a(14) =1624a(15) =2015a(16) =2464a(17) =2975a(18) =3552a(19) =4199a(20) =4920a(21) =5719a(22) =6600a(23) =7567a(24) =8624a(25) =9775a(26) =11024a(27) =12375a(28) =13832a(29) =15399