Tribonacci-like sequence a(n) = a(n-1) + a(n-2) + a(n-3) for n >= 3, with a(0) = 1, a(1) = 2, a(2) = 1.

A275778

Tribonacci-like sequence a(n) = a(n-1) + a(n-2) + a(n-3) for n >= 3, with a(0) = 1, a(1) = 2, a(2) = 1.

Terms

    a(0) =1a(1) =2a(2) =1a(3) =4a(4) =7a(5) =12a(6) =23a(7) =42a(8) =77a(9) =142a(10) =261a(11) =480a(12) =883a(13) =1624a(14) =2987a(15) =5494a(16) =10105a(17) =18586a(18) =34185a(19) =62876a(20) =115647a(21) =212708a(22) =391231a(23) =719586a(24) =1323525a(25) =2434342a(26) =4477453a(27) =8235320a(28) =15147115a(29) =27859888

External references