Number of flat special rim-hook tableaux.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =9a(6) =18a(7) =27a(8) =50a(9) =79a(10) =138a(11) =215a(12) =378a(13) =583a(14) =986a(15) =1557a(16) =2574a(17) =4011a(18) =6630a(19) =10269a(20) =16682a(21) =26041a(22) =41670a(23) =64577a(24) =103434a(25) =159313a(26) =252062a(27) =389895a(28) =611862a(29) =940437