Powers of cube root of 13 rounded down.

Terms

a(0) =1a(1) =2a(2) =5a(3) =13a(4) =30a(5) =71a(6) =169a(7) =397a(8) =934a(9) =2197a(10) =5165a(11) =12146a(12) =28561a(13) =67156a(14) =157907a(15) =371293a(16) =873034a(17) =2052795a(18) =4826809a(19) =11349443a(20) =26686340a(21) =62748517a(22) =147542764a(23) =346922420a(24) =815730721a(25) =1918055940a(26) =4509991465a(27) =10604499373a(28) =24934727221a(29) =58629889045