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

Terms

a(0) =1a(1) =0a(2) =2a(3) =1a(4) =3a(5) =6a(6) =10a(7) =15a(8) =30a(9) =54a(10) =92a(11) =160a(12) =282a(13) =492a(14) =859a(15) =1490a(16) =2570a(17) =4428a(18) =7627a(19) =13098a(20) =22421a(21) =38290a(22) =65265a(23) =111018a(24) =188475a(25) =319380a(26) =540266a(27) =912397a(28) =1538371a(29) =2589858