Number of log-concave compositions (ordered partitions) of n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =6a(5) =9a(6) =14a(7) =20a(8) =26a(9) =36a(10) =47a(11) =60a(12) =80a(13) =102a(14) =127a(15) =159a(16) =194a(17) =236a(18) =291a(19) =355a(20) =425a(21) =514a(22) =611a(23) =718a(24) =856a(25) =1009a(26) =1182a(27) =1381a(28) =1605a(29) =1861