a(n) = sum of lengths of strings that can be generated by any starting string of n 2's and 3's, using the rule described in the Comments lines.

A094005

a(n) = sum of lengths of strings that can be generated by any starting string of n 2's and 3's, using the rule described in the Comments lines.

Terms

    a(0) =2a(1) =11a(2) =30a(3) =82a(4) =199a(5) =480a(6) =1097a(7) =2630a(8) =5828a(9) =12830a(10) =27873a(11) =60071a(12) =128355a(13) =273543a(14) =580149a(15) =1226626a(16) =2584822a(17) =5433676a(18) =11392986a(19) =23838396a(20) =49776503a(21) =103755527a(22) =215904926a(23) =448602871a(24) =930771041a(25) =1928682932a(26) =3991605129a(27) =8251710234a(28) =17040335019a(29) =35154540729

External references