Number of length-n restricted growth strings (RGS) with growth <= four and fixed first element.
A305964
Number of length-n restricted growth strings (RGS) with growth <= four and fixed first element.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =35a(4) =305a(5) =3125a(6) =36479a(7) =475295a(8) =6811205a(9) =106170245a(10) =1784531879a(11) =32117927231a(12) =615413731205
External references
- oeis: A305964