Powers of cube root of 22 rounded up.

Terms

a(0) =1a(1) =3a(2) =8a(3) =22a(4) =62a(5) =173a(6) =484a(7) =1357a(8) =3801a(9) =10648a(10) =29837a(11) =83602a(12) =234256a(13) =656395a(14) =1839244a(15) =5153632a(16) =14440680a(17) =40463353a(18) =113379904a(19) =317694951a(20) =890193746a(21) =2494357888a(22) =6989288907a(23) =19584262411a(24) =54875873536a(25) =153764355952a(26) =430853773031