Number of terms in n-th derivative of a function composed with itself 8 times.

Terms

a(0) =1a(1) =1a(2) =8a(3) =36a(4) =148a(5) =498a(6) =1590a(7) =4586a(8) =12644a(9) =32775a(10) =81901a(11) =196085a(12) =455772a(13) =1025779a(14) =2252674a(15) =4823546a(16) =10116553a(17) =20783490a(18) =41949270a(19) =83211931a(20) =162552093a(21) =312850854a(22) =594086542a(23) =1113610526a(24) =2062796698a(25) =3777567977a(26) =6844786250a(27) =12276620372a(28) =21809737429a(29) =38391720375