Number of compositions of 6*n-1 into parts 5 and 6.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =7a(6) =15a(7) =44a(8) =129a(9) =340a(10) =804a(11) =1742a(12) =3550a(13) =7009a(14) =13835a(15) =28033a(16) =58993a(17) =128136a(18) =282569a(19) =622575a(20) =1357136a(21) =2918449a(22) =6204578a(23) =13104675a(24) =27646776a(25) =58502733a(26) =124411595a(27) =265807567a(28) =569552644a(29) =1221316021