Even almost practical numbers.

Terms

a(0) =70a(1) =350a(2) =490a(3) =770a(4) =910a(5) =1190a(6) =1330a(7) =1610a(8) =1750a(9) =2030a(10) =2170a(11) =2450a(12) =2584a(13) =2590a(14) =2870a(15) =3010a(16) =3128a(17) =3290a(18) =3430a(19) =3710a(20) =3850a(21) =3944a(22) =4130a(23) =4216a(24) =4270a(25) =4550a(26) =4690a(27) =5390a(28) =5950a(29) =6370