A hierarchical sequence (S(W'3{2,2}cc) - see A059126).

A059158

A hierarchical sequence (S(W'3{2,2}cc) - see A059126).

Terms

    a(0) =24a(1) =432a(2) =7008a(3) =112320a(4) =1797504a(5) =28760832a(6) =460174848a(7) =7362800640a(8) =117804816384

External references