6th power of rooted tree enumerator; number of linear forests of 6 rooted trees.

A000395

6th power of rooted tree enumerator; number of linear forests of 6 rooted trees.

Terms

    a(0) =1a(1) =6a(2) =27a(3) =104a(4) =369a(5) =1236a(6) =3989a(7) =12522a(8) =38535a(9) =116808a(10) =350064a(11) =1039896a(12) =3068145a(13) =9004182a(14) =26314773a(15) =76652582a(16) =222705603a(17) =645731148a(18) =1869303857a(19) =5404655358a(20) =15611296146a(21) =45060069406a(22) =129989169909a(23) =374843799786

External references