Number of length-n restricted growth strings (RGS) with growth <= seven and first element in [7].

A306031

Number of length-n restricted growth strings (RGS) with growth <= seven and first element in [7].

Terms

    a(0) =1a(1) =7a(2) =77a(3) =1071a(4) =17689a(5) =335083a(6) =7117789a(7) =166862583a(8) =4266097185a(9) =117856459427

External references