a(n) = A000265(3*(a(n-1) + a(n-2))/2 + 1) starting at a(1)=1, a(2)=11.

Terms

a(0) =1a(1) =11a(2) =19a(3) =23a(4) =1a(5) =37a(6) =29a(7) =25a(8) =41a(9) =25a(10) =25a(11) =19a(12) =67a(13) =65a(14) =199a(15) =397a(16) =895a(17) =1939a(18) =1063a(19) =563a(20) =305a(21) =1303a(22) =2413a(23) =5575a(24) =11983a(25) =13169a(26) =37729a(27) =19087a(28) =85225a(29) =156469