Number of isoscent sequences of length n with exactly four ascents.
A243230
Number of isoscent sequences of length n with exactly four ascents.
Terms
- a(0) =2a(1) =172a(2) =3048a(3) =33065a(4) =275641a(5) =1945529a(6) =12246616a(7) =70948683a(8) =386155045a(9) =2002805428a(10) =10000176270a(11) =48434098918a(12) =228855387073
External references
- oeis: A243230