Number of terms in 6th derivative of a function composed with itself n times.

Terms

a(0) =1a(1) =11a(2) =44a(3) =121a(4) =271a(5) =532a(6) =952a(7) =1590a(8) =2517a(9) =3817a(10) =5588a(11) =7943a(12) =11011a(13) =14938a(14) =19888a(15) =26044a(16) =33609a(17) =42807a(18) =53884a(19) =67109a(20) =82775a(21) =101200a(22) =122728a(23) =147730a(24) =176605a(25) =209781a(26) =247716a(27) =290899a(28) =339851a(29) =395126