Total number of 132 patterns in all heapable permutations of length n.
A391181
Total number of 132 patterns in all heapable permutations of length n.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =7a(4) =56a(5) =442a(6) =3793a(7) =35026a(8) =351037a(9) =3804874a(10) =44499168a(11) =559492015a(12) =7535942780a(13) =108358479315
External references
- oeis: A391181