Leading diagonal of triangle A119444.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =7a(7) =13a(8) =27a(9) =63a(10) =109a(11) =207a(12) =331a(13) =553a(14) =931a(15) =1531a(16) =2527a(17) =4093a(18) =6673a(19) =10831a(20) =17563a(21) =28561a(22) =46227a(23) =74883a(24) =121219a(25) =196239a(26) =317607a(27) =514047a(28) =831823a(29) =1346041