Number of compositions of n into exactly n nonnegative parts <= ten.

Terms

a(0) =1a(1) =1a(2) =3a(3) =10a(4) =35a(5) =126a(6) =462a(7) =1716a(8) =6435a(9) =24310a(10) =92378a(11) =352705a(12) =1351934a(13) =5199117a(14) =20050460a(15) =77512860a(16) =300292131a(17) =1165534689a(18) =4531337778a(19) =17642948675a(20) =68785126410a(21) =268497991905