Number of "polyares" of order n (turning over not allowed).
A057725
Number of "polyares" of order n (turning over not allowed).
Terms
- a(0) =1a(1) =4a(2) =16a(3) =77a(4) =351a(5) =1747a(6) =8745a(7) =44724a(8) =230765a(9) =1203567a(10) =6323074a(11) =33444084a(12) =177863517a(13) =950557538a(14) =5101540598
External references
- oeis: A057725