Number of partitions of 2*n-1 into parts not greater than n.

Terms

a(0) =1a(1) =2a(2) =5a(3) =11a(4) =23a(5) =44a(6) =82a(7) =146a(8) =252a(9) =423a(10) =695a(11) =1116a(12) =1763a(13) =2738a(14) =4192a(15) =6334a(16) =9459a(17) =13968a(18) =20425a(19) =29588a(20) =42496a(21) =60547a(22) =85628a(23) =120246a(24) =167762a(25) =232605a(26) =320635a(27) =439544a(28) =599412a(29) =813360