Tribonacci numbers that start with first three cubes.

Terms

a(0) =1a(1) =8a(2) =27a(3) =36a(4) =71a(5) =134a(6) =241a(7) =446a(8) =821a(9) =1508a(10) =2775a(11) =5104a(12) =9387a(13) =17266a(14) =31757a(15) =58410a(16) =107433a(17) =197600a(18) =363443a(19) =668476a(20) =1229519a(21) =2261438a(22) =4159433a(23) =7650390a(24) =14071261a(25) =25881084a(26) =47602735a(27) =87555080a(28) =161038899a(29) =296196714