a(n) = sum of lengths of strings that can be generated by any starting string of n 2's and 3's that starts with a 2, using the rule described in the Comments lines.
A093369
a(n) = sum of lengths of strings that can be generated by any starting string of n 2's and 3's that starts with a 2, using the rule described in the Comments lines.
Terms
- a(0) =1a(1) =6a(2) =14a(3) =42a(4) =98a(5) =242a(6) =552a(7) =1394a(8) =2935a(9) =6471a(10) =14006a(11) =30060a(12) =64223a(13) =136914a(14) =290224a(15) =613509a(16) =1292567a(17) =2717311a(18) =5696864a(19) =11920124a(20) =24889066a(21) =51880008a(22) =107954163a(23) =224305440a(24) =465388743a(25) =964349526a(26) =1995808823a(27) =4125871527a(28) =8520180124a(29) =17577302639
External references
- oeis: A093369