Number of terms in 10th derivative of a function composed with itself n times.

Terms

a(0) =1a(1) =42a(2) =345a(3) =1597a(4) =5436a(5) =15217a(6) =37148a(7) =81901a(8) =166819a(9) =318857a(10) =578413a(11) =1004224a(12) =1679522a(13) =2719666a(14) =4281488a(15) =6574614a(16) =9875045a(17) =14541308a(18) =21033513a(19) =29935679a(20) =41981720a(21) =58085511a(22) =79375484a(23) =107234235a(24) =143343655a(25) =189736131a(26) =248852397a(27) =323606650a(28) =417459582a(29) =534500016