Number of compositions of n into distinct parts with exactly seven descents.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =7a(6) =11a(7) =15a(8) =22a(9) =531a(10) =542a(11) =1056a(12) =1576a(13) =2599a(14) =3630a(15) =5668a(16) =7716a(17) =11274a(18) =15348a(19) =68774a(20) =75382a(21) =132851a(22) =191346a(23) =301710a(24) =414613a(25) =628232a(26) =845401a(27) =1213643a(28) =1634287a(29) =2256360