Number of compositions of n in which the smallest part is equal to the number of parts.

Terms

a(0) =1a(1) =0a(2) =0a(3) =1a(4) =2a(5) =2a(6) =2a(7) =2a(8) =3a(9) =5a(10) =8a(11) =11a(12) =14a(13) =17a(14) =20a(15) =24a(16) =30a(17) =39a(18) =52a(19) =69a(20) =90a(21) =115a(22) =144a(23) =177a(24) =215a(25) =260a(26) =315a(27) =384a(28) =472a(29) =584