Number of relatively prime enriched p-trees of weight n.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =28a(5) =56a(6) =256a(7) =656a(8) =2480a(9) =6688a(10) =30736a(11) =73984a(12) =366560a(13) =1006720a(14) =3966976a(15) =12738560a(16) =58427648a(17) =148069632a(18) =764473600a(19) =2133585664a(20) =8939502080a(21) =28705390592a(22) =136987259648a(23) =356634376704