The number of cubefull numbers (A036966) not exceeding 10^n.

Terms

a(0) =1a(1) =2a(2) =7a(3) =20a(4) =51a(5) =129a(6) =307a(7) =713a(8) =1645a(9) =3721a(10) =8348a(11) =18589a(12) =41136a(13) =90619a(14) =198767a(15) =434572a(16) =947753a(17) =2062437a(18) =4480253a(19) =9718457a(20) =21055958a(21) =45575049a(22) =98566055a(23) =213028539a(24) =460160083a(25) =993533517a(26) =2144335391a(27) =4626664451a(28) =9980028172a(29) =21523027285