Powers of cube root of 19 rounded up.

Terms

a(0) =1a(1) =3a(2) =8a(3) =19a(4) =51a(5) =136a(6) =361a(7) =964a(8) =2571a(9) =6859a(10) =18303a(11) =48839a(12) =130321a(13) =347749a(14) =927934a(15) =2476099a(16) =6607227a(17) =17630735a(18) =47045881a(19) =125537307a(20) =334983956a(21) =893871739a(22) =2385208823a(23) =6364695154a(24) =16983563041a(25) =45318967620a(26) =120929207915a(27) =322687697779a(28) =861060384776