Number of enhanced partial matchings of n elements treatable by "PTR" (Procedure Triple Reverse).
A220872
Number of enhanced partial matchings of n elements treatable by "PTR" (Procedure Triple Reverse).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =25a(6) =67a(7) =180a(8) =496a(9) =1370a(10) =3863a(11) =10881a(12) =31448a(13) =90280
External references
- oeis: A220872