Powers of cube root of 7 rounded down.

Terms

a(0) =1a(1) =1a(2) =3a(3) =7a(4) =13a(5) =25a(6) =49a(7) =93a(8) =179a(9) =343a(10) =656a(11) =1255a(12) =2401a(13) =4592a(14) =8785a(15) =16807a(16) =32150a(17) =61501a(18) =117649a(19) =225054a(20) =430513a(21) =823543a(22) =1575381a(23) =3013595a(24) =5764801a(25) =11027667a(26) =21095169a(27) =40353607a(28) =77193673a(29) =147666184